1656806806053 has 30 divisors (see below), whose sum is σ = 2879061871686. Its totient is φ = 946746744048.

The previous prime is 1656806806007. The next prime is 1656806806063. The reversal of 1656806806053 is 3506086086561.

1656806806053 is a `hidden beast` number, since 16 + 568 + 0 + 6 + 8 + 0 + 60 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1251046724004 + 405760082049 = 1118502^2 + 636993^2 .

It is not a de Polignac number, because 1656806806053 - 2¹³ = 1656806797861 is a prime.

It is a super-4 number, since 4×1656806806053⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656806806003) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 208714450 + ... + 208722387.

Almost surely, 2^{1656806806053} is an apocalyptic number.

It is an amenable number.

1656806806053 is a deficient number, since it is larger than the sum of its proper divisors (1222255065633).

1656806806053 is an equidigital number, since it uses as much as digits as its factorization.

1656806806053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417436863 (or 417436847 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 1656806806053 in words is "one trillion, six hundred fifty-six billion, eight hundred six million, eight hundred six thousand, fifty-three".