1615556331164 has 6 divisors (see below), whose sum is σ = 2827223579544. Its totient is φ = 807778165580.

The previous prime is 1615556331163. The next prime is 1615556331197. The reversal of 1615556331164 is 4611336555161.

It is a super-2 number, since 2×1615556331164² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615556331163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201944541392 + ... + 201944541399.

It is an arithmetic number, because the mean of its divisors is an integer number (471203929924).

Almost surely, 2^{1615556331164} is an apocalyptic number.

It is an amenable number.

1615556331164 is a deficient number, since it is larger than the sum of its proper divisors (1211667248380).

1615556331164 is a wasteful number, since it uses less digits than its factorization.

1615556331164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403889082795 (or 403889082793 counting only the distinct ones).

The product of its digits is 972000, while the sum is 47.

The spelling of 1615556331164 in words is "one trillion, six hundred fifteen billion, five hundred fifty-six million, three hundred thirty-one thousand, one hundred sixty-four".