1656236976345 has 64 divisors (see below), whose sum is σ = 3387637440000. Its totient is φ = 752055383808.

The previous prime is 1656236976307. The next prime is 1656236976371. The reversal of 1656236976345 is 5436796326561.

1656236976345 is a `hidden beast` number, since 1 + 6 + 56 + 236 + 9 + 7 + 6 + 345 = 666.

It is not a de Polignac number, because 1656236976345 - 2²³ = 1656228587737 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5740510 + ... + 6022119.

It is an arithmetic number, because the mean of its divisors is an integer number (52931835000).

Almost surely, 2^{1656236976345} is an apocalyptic number.

1656236976345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1656236976345 is an abundant number, since it is smaller than the sum of its proper divisors (1731400463655).

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

1656236976345 is a wasteful number, since it uses less digits than its factorization.

1656236976345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762799 (or 11762793 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 63.

The spelling of 1656236976345 in words is "one trillion, six hundred fifty-six billion, two hundred thirty-six million, nine hundred seventy-six thousand, three hundred forty-five".