1345645440156 has 24 divisors (see below), whose sum is σ = 3140311490064. Its totient is φ = 448481032960.

The previous prime is 1345645440127. The next prime is 1345645440157. The reversal of 1345645440156 is 6510445465431.

It is a super-2 number, since 2×1345645440156² (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 (1345645440157) 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, 8347725 + ... + 8507396.

It is an arithmetic number, because the mean of its divisors is an integer number (130846312086).

Almost surely, 2^{1345645440156} is an apocalyptic number.

It is an amenable number.

1345645440156 is an abundant number, since it is smaller than the sum of its proper divisors (1794666049908).

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

1345645440156 is a wasteful number, since it uses less digits than its factorization.

1345645440156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16861781 (or 16861779 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

It can be divided in two parts, 13456454 and 40156, that added together give a triangular number (13496610 = T₅₁₉₅).

The spelling of 1345645440156 in words is "one trillion, three hundred forty-five billion, six hundred forty-five million, four hundred forty thousand, one hundred fifty-six".