47485637446477 has 4 divisors (see below), whose sum is σ = 47617909417440. Its totient is φ = 47353365475516.

The previous prime is 47485637446427. The next prime is 47485637446501. The reversal of 47485637446477 is 77464473658474.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-47485637446477 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 (47485637446427) 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, 66135984943 + ... + 66135985660.

It is an arithmetic number, because the mean of its divisors is an integer number (11904477354360).

Almost surely, 2^{47485637446477} is an apocalyptic number.

It is an amenable number.

47485637446477 is a deficient number, since it is larger than the sum of its proper divisors (132271970963).

47485637446477 is a wasteful number, since it uses less digits than its factorization.

47485637446477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132271970962.

The product of its digits is 10621255680, while the sum is 76.

The spelling of 47485637446477 in words is "forty-seven trillion, four hundred eighty-five billion, six hundred thirty-seven million, four hundred forty-six thousand, four hundred seventy-seven".