1313556440634 has 32 divisors (see below), whose sum is σ = 2919154680000. Its totient is φ = 437831091792.

The previous prime is 1313556440629. The next prime is 1313556440641. The reversal of 1313556440634 is 4360446553131.

1313556440634 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 5 + 5 + 6 + 4 + 4 + 0 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1313556440634.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569392 + ... + 1717940.

It is an arithmetic number, because the mean of its divisors is an integer number (91223583750).

Almost surely, 2^{1313556440634} is an apocalyptic number.

1313556440634 is an abundant number, since it is smaller than the sum of its proper divisors (1605598239366).

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

1313556440634 is a wasteful number, since it uses less digits than its factorization.

1313556440634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169739 (or 1169733 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 1313556440634 in words is "one trillion, three hundred thirteen billion, five hundred fifty-six million, four hundred forty thousand, six hundred thirty-four".