47157676761581 has 4 divisors (see below), whose sum is σ = 47173788030912. Its totient is φ = 47141565492252.

The previous prime is 47157676761553. The next prime is 47157676761623. The reversal of 47157676761581 is 18516767675174.

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-47157676761581 is a prime.

It is a super-2 number, since 2×47157676761581² (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 (47157676761281) 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, 8055630275 + ... + 8055636128.

It is an arithmetic number, because the mean of its divisors is an integer number (11793447007728).

Almost surely, 2^{47157676761581} is an apocalyptic number.

It is an amenable number.

47157676761581 is a deficient number, since it is larger than the sum of its proper divisors (16111269331).

47157676761581 is a wasteful number, since it uses less digits than its factorization.

47157676761581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111269330.

The product of its digits is 414892800, while the sum is 71.

The spelling of 47157676761581 in words is "forty-seven trillion, one hundred fifty-seven billion, six hundred seventy-six million, seven hundred sixty-one thousand, five hundred eighty-one".