157561909767696 has 80 divisors (see below), whose sum is σ = 473959814880384. Its totient is φ = 44168298150912.

The previous prime is 157561909767683. The next prime is 157561909767697. The reversal of 157561909767696 is 696767909165751.

157561909767696 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is not an unprimeable number, because it can be changed into a prime (157561909767697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4423890261 + ... + 4423925876.

Almost surely, 2^{157561909767696} is an apocalyptic number.

157561909767696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

157561909767696 is an abundant number, since it is smaller than the sum of its proper divisors (316397905112688).

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

157561909767696 is a wasteful number, since it uses less digits than its factorization.

157561909767696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8847816208 (or 8847816202 counting only the distinct ones).

The product of its (nonzero) digits is 8101522800, while the sum is 84.

The spelling of 157561909767696 in words is "one hundred fifty-seven trillion, five hundred sixty-one billion, nine hundred nine million, seven hundred sixty-seven thousand, six hundred ninety-six".