47657542661 has 16 divisors (see below), whose sum is σ = 50605056000. Its totient is φ = 44755642800.

The previous prime is 47657542589. The next prime is 47657542687. The reversal of 47657542661 is 16624575674.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 47657542661 - 2²⁶ = 47590433797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47657541661) 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, 1001396 + ... + 1047906.

It is an arithmetic number, because the mean of its divisors is an integer number (3162816000).

Almost surely, 2^47657542661 is an apocalyptic number.

It is an amenable number.

47657542661 is a deficient number, since it is larger than the sum of its proper divisors (2947513339).

47657542661 is a wasteful number, since it uses less digits than its factorization.

47657542661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47000.

The product of its digits is 8467200, while the sum is 53.

The spelling of 47657542661 in words is "forty-seven billion, six hundred fifty-seven million, five hundred forty-two thousand, six hundred sixty-one".