1155072752640 has 220 divisors, whose sum is σ = 4139129160936. Its totient is φ = 308019290112.

The previous prime is 1155072752609. The next prime is 1155072752653. The reversal of 1155072752640 is 462572705511.

1155072752640 is a `hidden beast` number, since 1 + 1 + 5 + 50 + 72 + 7 + 526 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 977874 + ... + 1807313.

Almost surely, 2^{1155072752640} is an apocalyptic number.

1155072752640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155072752640 is an abundant number, since it is smaller than the sum of its proper divisors (2984056408296).

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

1155072752640 is an equidigital number, since it uses as much as digits as its factorization.

1155072752640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785224 (or 2785197 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The spelling of 1155072752640 in words is "one trillion, one hundred fifty-five billion, seventy-two million, seven hundred fifty-two thousand, six hundred forty".