1155374564440 has 32 divisors (see below), whose sum is σ = 2683450604160. Its totient is φ = 447241766400.

The previous prime is 1155374564417. The next prime is 1155374564453. The reversal of 1155374564440 is 444654735511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465875601 + ... + 465878080.

It is an arithmetic number, because the mean of its divisors is an integer number (83857831380).

Almost surely, 2^{1155374564440} is an apocalyptic number.

1155374564440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155374564440 is an abundant number, since it is smaller than the sum of its proper divisors (1528076039720).

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

1155374564440 is a wasteful number, since it uses less digits than its factorization.

1155374564440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931753723 (or 931753719 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 1155374564440 in words is "one trillion, one hundred fifty-five billion, three hundred seventy-four million, five hundred sixty-four thousand, four hundred forty".