156357527415661 has 64 divisors (see below), whose sum is σ = 185644448317440. Its totient is φ = 129823002720000.

The previous prime is 156357527415653. The next prime is 156357527415671. The reversal of 156357527415661 is 166514725753651.

It is a happy number.

156357527415661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 156357527415661 - 2³ = 156357527415653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156357527415593 and 156357527415602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156357527415601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5595574456 + ... + 5595602398.

It is an arithmetic number, because the mean of its divisors is an integer number (2900694504960).

Almost surely, 2^{156357527415661} is an apocalyptic number.

156357527415661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156357527415661 is a deficient number, since it is larger than the sum of its proper divisors (29286920901779).

156357527415661 is a wasteful number, since it uses less digits than its factorization.

156357527415661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29138.

The product of its digits is 158760000, while the sum is 64.

The spelling of 156357527415661 in words is "one hundred fifty-six trillion, three hundred fifty-seven billion, five hundred twenty-seven million, four hundred fifteen thousand, six hundred sixty-one".