16156570000061 has 4 divisors (see below), whose sum is σ = 16158072528252. Its totient is φ = 16155067471872.

The previous prime is 16156569999931. The next prime is 16156570000093. The reversal of 16156570000061 is 16000007565161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12148926351961 + 4007643648100 = 3485531^2 + 2001910^2 .

It is a cyclic number.

It is not a de Polignac number, because 16156570000061 - 2¹⁴ = 16156569983677 is a prime.

It is a super-2 number, since 2×16156570000061² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16156570020061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751247966 + ... + 751269471.

It is an arithmetic number, because the mean of its divisors is an integer number (4039518132063).

Almost surely, 2^{16156570000061} is an apocalyptic number.

It is an amenable number.

16156570000061 is a deficient number, since it is larger than the sum of its proper divisors (1502528191).

16156570000061 is a wasteful number, since it uses less digits than its factorization.

16156570000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502528190.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 16156570000061 in words is "sixteen trillion, one hundred fifty-six billion, five hundred seventy million, sixty-one", and thus it is an aban number.