1155312352620 has 72 divisors (see below), whose sum is σ = 3507788793600. Its totient is φ = 307789551360.

The previous prime is 1155312352591. The next prime is 1155312352631. The reversal of 1155312352620 is 262532135511.

1155312352620 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 3 + 1 + 23 + 5 + 2 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2870476 + ... + 3248115.

It is an arithmetic number, because the mean of its divisors is an integer number (48719288800).

Almost surely, 2^{1155312352620} is an apocalyptic number.

1155312352620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155312352620 is an abundant number, since it is smaller than the sum of its proper divisors (2352476440980).

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

1155312352620 is a wasteful number, since it uses less digits than its factorization.

1155312352620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119655 (or 6119650 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 1155312352620 in words is "one trillion, one hundred fifty-five billion, three hundred twelve million, three hundred fifty-two thousand, six hundred twenty".