157105004031671 has 4 divisors (see below), whose sum is σ = 157106346456144. Its totient is φ = 157103661607200.

The previous prime is 157105004031667. The next prime is 157105004031721. The reversal of 157105004031671 is 176130400501751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157105004031671 - 2² = 157105004031667 is a prime.

It is a super-2 number, since 2×157105004031671² (a number of 29 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 (157105004031601) 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, 671036675 + ... + 671270756.

It is an arithmetic number, because the mean of its divisors is an integer number (39276586614036).

Almost surely, 2^{157105004031671} is an apocalyptic number.

157105004031671 is a deficient number, since it is larger than the sum of its proper divisors (1342424473).

157105004031671 is a wasteful number, since it uses less digits than its factorization.

157105004031671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342424472.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 157105004031671 in words is "one hundred fifty-seven trillion, one hundred five billion, four million, thirty-one thousand, six hundred seventy-one".