157121860996 has 9 divisors (see below), whose sum is σ = 274964644101. Its totient is φ = 78560534112.

The previous prime is 157121860969. The next prime is 157121861023. The reversal of 157121860996 is 699068121751.

It is a happy number.

The square root of 157121860996 is 396386.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (157121860969) and next prime (157121861023).

It can be written as a sum of positive squares in only one way, i.e., 20269216900 + 136852644096 = 142370^2 + 369936^2 .

It is a super-2 number, since 2×157121860996² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 693676 + ... + 891868.

Almost surely, 2^157121860996 is an apocalyptic number.

157121860996 is the 396386-th square number.

It is an amenable number.

157121860996 is a deficient number, since it is larger than the sum of its proper divisors (117842783105).

157121860996 is an frugal number, since it uses more digits than its factorization.

157121860996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396390 (or 198195 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 157121860996 in words is "one hundred fifty-seven billion, one hundred twenty-one million, eight hundred sixty thousand, nine hundred ninety-six".