15400377654164 has 24 divisors (see below), whose sum is σ = 29519993681640. Its totient is φ = 6997331833856.

The previous prime is 15400377654163. The next prime is 15400377654203. The reversal of 15400377654164 is 46145677300451.

It can be written as a sum of positive squares in 4 ways, for example, as 6390126736900 + 9010250917264 = 2527870^2 + 3001708^2 .

It is a super-3 number, since 3×15400377654164³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15400377654163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3904759097 + ... + 3904763040.

It is an arithmetic number, because the mean of its divisors is an integer number (1229999736735).

Almost surely, 2^{15400377654164} is an apocalyptic number.

It is an amenable number.

15400377654164 is a deficient number, since it is larger than the sum of its proper divisors (14119616027476).

15400377654164 is a wasteful number, since it uses less digits than its factorization.

15400377654164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809522187 (or 7809522185 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 53.

The spelling of 15400377654164 in words is "fifteen trillion, four hundred billion, three hundred seventy-seven million, six hundred fifty-four thousand, one hundred sixty-four".