1656135665355 has 32 divisors (see below), whose sum is σ = 2674835680320. Its totient is φ = 874941992960.

The previous prime is 1656135665291. The next prime is 1656135665411. The reversal of 1656135665355 is 5535665316561.

It is not a de Polignac number, because 1656135665355 - 2⁶ = 1656135665291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1656135665295 and 1656135665304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2610895 + ... + 3182615.

It is an arithmetic number, because the mean of its divisors is an integer number (83588615010).

Almost surely, 2^{1656135665355} is an apocalyptic number.

1656135665355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1656135665355 is a deficient number, since it is larger than the sum of its proper divisors (1018700014965).

1656135665355 is a wasteful number, since it uses less digits than its factorization.

1656135665355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573551.

The product of its digits is 36450000, while the sum is 57.

The spelling of 1656135665355 in words is "one trillion, six hundred fifty-six billion, one hundred thirty-five million, six hundred sixty-five thousand, three hundred fifty-five".