2153256011634 has 32 divisors (see below), whose sum is σ = 5300322491520. Its totient is φ = 567891695232.

The previous prime is 2153256011603. The next prime is 2153256011657. The reversal of 2153256011634 is 4361106523512.

It is a happy number.

It is a super-2 number, since 2×2153256011634² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 2153256011592 and 2153256011601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971845619 + ... + 1971846710.

It is an arithmetic number, because the mean of its divisors is an integer number (165635077860).

Almost surely, 2^{2153256011634} is an apocalyptic number.

2153256011634 is an abundant number, since it is smaller than the sum of its proper divisors (3147066479886).

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

2153256011634 is a wasteful number, since it uses less digits than its factorization.

2153256011634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943692354.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 2153256011634 in words is "two trillion, one hundred fifty-three billion, two hundred fifty-six million, eleven thousand, six hundred thirty-four".