34511236921 has 32 divisors (see below), whose sum is σ = 41520660480. Its totient is φ = 28069384896.

The previous prime is 34511236913. The next prime is 34511236933. The reversal of 34511236921 is 12963211543.

It is not a de Polignac number, because 34511236921 - 2³ = 34511236913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34511231921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1931796 + ... + 1949578.

It is an arithmetic number, because the mean of its divisors is an integer number (1297520640).

Almost surely, 2^34511236921 is an apocalyptic number.

It is an amenable number.

34511236921 is a deficient number, since it is larger than the sum of its proper divisors (7009423559).

34511236921 is a wasteful number, since it uses less digits than its factorization.

34511236921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18013.

The product of its digits is 38880, while the sum is 37.

The spelling of 34511236921 in words is "thirty-four billion, five hundred eleven million, two hundred thirty-six thousand, nine hundred twenty-one".