157640663982 has 32 divisors (see below), whose sum is σ = 328363075584. Its totient is φ = 50406602400.

The previous prime is 157640663959. The next prime is 157640663989. The reversal of 157640663982 is 289366046751.

157640663982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157640663989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4984894 + ... + 5016417.

It is an arithmetic number, because the mean of its divisors is an integer number (10261346112).

It is a 1-persistent number, because it is pandigital, but 2⋅157640663982 = 315281327964 is not.

Almost surely, 2^157640663982 is an apocalyptic number.

157640663982 is an abundant number, since it is smaller than the sum of its proper divisors (170722411602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157640663982 is a wasteful number, since it uses less digits than its factorization.

157640663982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001424.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 157640663982 in words is "one hundred fifty-seven billion, six hundred forty million, six hundred sixty-three thousand, nine hundred eighty-two".