157907923905 has 8 divisors (see below), whose sum is σ = 252652678272. Its totient is φ = 84217559408.

The previous prime is 157907923883. The next prime is 157907923909. The reversal of 157907923905 is 509329709751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157907923905 - 2¹² = 157907919809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157907923909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5263597449 + ... + 5263597478.

It is an arithmetic number, because the mean of its divisors is an integer number (31581584784).

Almost surely, 2^157907923905 is an apocalyptic number.

157907923905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157907923905 is a deficient number, since it is larger than the sum of its proper divisors (94744754367).

157907923905 is a wasteful number, since it uses less digits than its factorization.

157907923905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10527194935.

The product of its (nonzero) digits is 5358150, while the sum is 57.

The spelling of 157907923905 in words is "one hundred fifty-seven billion, nine hundred seven million, nine hundred twenty-three thousand, nine hundred five".