157982664961 has 8 divisors (see below), whose sum is σ = 172608660864. Its totient is φ = 143400658320.

The previous prime is 157982664913. The next prime is 157982664967. The reversal of 157982664961 is 169466289751.

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 157982664961 - 2⁹ = 157982664449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157982664893 and 157982664902.

It is not an unprimeable number, because it can be changed into a prime (157982664967) 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, 10989801 + ... + 11004166.

It is an arithmetic number, because the mean of its divisors is an integer number (21576082608).

Almost surely, 2^157982664961 is an apocalyptic number.

157982664961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157982664961 is a deficient number, since it is larger than the sum of its proper divisors (14625995903).

157982664961 is a wasteful number, since it uses less digits than its factorization.

157982664961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21994631.

The product of its digits is 39191040, while the sum is 64.

The spelling of 157982664961 in words is "one hundred fifty-seven billion, nine hundred eighty-two million, six hundred sixty-four thousand, nine hundred sixty-one".