157904431982 has 16 divisors (see below), whose sum is σ = 271988496000. Its totient is φ = 67997123640.

The previous prime is 157904431967. The next prime is 157904432029. The reversal of 157904431982 is 289134409751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188880482 + ... + 188881317.

It is an arithmetic number, because the mean of its divisors is an integer number (16999281000).

Almost surely, 2^157904431982 is an apocalyptic number.

157904431982 is a deficient number, since it is larger than the sum of its proper divisors (114084064018).

157904431982 is a wasteful number, since it uses less digits than its factorization.

157904431982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377761831.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 157904431982 in words is "one hundred fifty-seven billion, nine hundred four million, four hundred thirty-one thousand, nine hundred eighty-two".