47637657551 has 16 divisors (see below), whose sum is σ = 52144121088. Its totient is φ = 43160688000.

The previous prime is 47637657481. The next prime is 47637657593. The reversal of 47637657551 is 15575673674.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47637657551 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 (47637657751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5761046 + ... + 5769308.

It is an arithmetic number, because the mean of its divisors is an integer number (3259007568).

Almost surely, 2^47637657551 is an apocalyptic number.

47637657551 is a deficient number, since it is larger than the sum of its proper divisors (4506463537).

47637657551 is a wasteful number, since it uses less digits than its factorization.

47637657551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9982.

The product of its digits is 18522000, while the sum is 56.

The spelling of 47637657551 in words is "forty-seven billion, six hundred thirty-seven million, six hundred fifty-seven thousand, five hundred fifty-one".