1561656030164 has 24 divisors (see below), whose sum is σ = 2862562792320. Its totient is φ = 744039115424.

The previous prime is 1561656030139. The next prime is 1561656030199. The reversal of 1561656030164 is 4610306561651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32246759 + ... + 32295150.

It is an arithmetic number, because the mean of its divisors is an integer number (119273449680).

Almost surely, 2^{1561656030164} is an apocalyptic number.

It is an amenable number.

1561656030164 is a deficient number, since it is larger than the sum of its proper divisors (1300906762156).

1561656030164 is a wasteful number, since it uses less digits than its factorization.

1561656030164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64542199 (or 64542197 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 1561656030164 in words is "one trillion, five hundred sixty-one billion, six hundred fifty-six million, thirty thousand, one hundred sixty-four".