156070716551661 has 16 divisors (see below), whose sum is σ = 215347473086400. Its totient is φ = 100423136166528.

The previous prime is 156070716551657. The next prime is 156070716551663. The reversal of 156070716551661 is 166155617070651.

It is not a de Polignac number, because 156070716551661 - 2² = 156070716551657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156070716551663) 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, 322753771 + ... + 323236968.

It is an arithmetic number, because the mean of its divisors is an integer number (13459217067900).

Almost surely, 2^{156070716551661} is an apocalyptic number.

It is an amenable number.

156070716551661 is a deficient number, since it is larger than the sum of its proper divisors (59276756534739).

156070716551661 is a wasteful number, since it uses less digits than its factorization.

156070716551661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645993548.

The product of its (nonzero) digits is 7938000, while the sum is 57.

The spelling of 156070716551661 in words is "one hundred fifty-six trillion, seventy billion, seven hundred sixteen million, five hundred fifty-one thousand, six hundred sixty-one".