47877855478477 has 4 divisors (see below), whose sum is σ = 47879080109116. Its totient is φ = 47876630847840.

The previous prime is 47877855478471. The next prime is 47877855478483. The reversal of 47877855478477 is 77487455877874.

47877855478477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (47877855478471) and next prime (47877855478483).

It can be written as a sum of positive squares in 2 ways, for example, as 21053680688041 + 26824174790436 = 4588429^2 + 5179206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47877855478477 is a prime.

It is a super-2 number, since 2×47877855478477² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47877855478471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612256674 + ... + 612334867.

It is an arithmetic number, because the mean of its divisors is an integer number (11969770027279).

Almost surely, 2^{47877855478477} is an apocalyptic number.

It is an amenable number.

47877855478477 is a deficient number, since it is larger than the sum of its proper divisors (1224630639).

47877855478477 is a wasteful number, since it uses less digits than its factorization.

47877855478477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224630638.

The product of its digits is 96378060800, while the sum is 88.

The spelling of 47877855478477 in words is "forty-seven trillion, eight hundred seventy-seven billion, eight hundred fifty-five million, four hundred seventy-eight thousand, four hundred seventy-seven".