1316540261504 has 64 divisors (see below), whose sum is σ = 2846789514240. Its totient is φ = 602849350656.

The previous prime is 1316540261503. The next prime is 1316540261513. The reversal of 1316540261504 is 4051620456131.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1316540261504² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316540261503) 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, 2903594 + ... + 3326249.

It is an arithmetic number, because the mean of its divisors is an integer number (44481086160).

Almost surely, 2^{1316540261504} is an apocalyptic number.

It is an amenable number.

1316540261504 is an abundant number, since it is smaller than the sum of its proper divisors (1530249252736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316540261504 is a wasteful number, since it uses less digits than its factorization.

1316540261504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6229997 (or 6229985 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 1316540261504 in words is "one trillion, three hundred sixteen billion, five hundred forty million, two hundred sixty-one thousand, five hundred four".