47767142477 has 4 divisors (see below), whose sum is σ = 47767816416. Its totient is φ = 47766468540.

The previous prime is 47767142461. The next prime is 47767142491. The reversal of 47767142477 is 77424176774.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47767142477 - 2⁴ = 47767142461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47767142377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216233 + ... + 377214.

It is an arithmetic number, because the mean of its divisors is an integer number (11941954104).

Almost surely, 2^47767142477 is an apocalyptic number.

It is an amenable number.

47767142477 is a deficient number, since it is larger than the sum of its proper divisors (673939).

47767142477 is an equidigital number, since it uses as much as digits as its factorization.

47767142477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673938.

The product of its digits is 12907776, while the sum is 56.

The spelling of 47767142477 in words is "forty-seven billion, seven hundred sixty-seven million, one hundred forty-two thousand, four hundred seventy-seven".