11658034921 has 8 divisors (see below), whose sum is σ = 12575097920. Its totient is φ = 10743870672.

The previous prime is 11658034901. The next prime is 11658034931. The reversal of 11658034921 is 12943085611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11658034921 - 2⁷ = 11658034793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11658034901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716325 + ... + 732418.

It is an arithmetic number, because the mean of its divisors is an integer number (1571887240).

Almost surely, 2^11658034921 is an apocalyptic number.

It is an amenable number.

11658034921 is a deficient number, since it is larger than the sum of its proper divisors (917062999).

11658034921 is a wasteful number, since it uses less digits than its factorization.

11658034921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449375.

The product of its (nonzero) digits is 51840, while the sum is 40.

It can be divided in two parts, 1165803 and 4921, that added together give a square (1170724 = 1082²).

The spelling of 11658034921 in words is "eleven billion, six hundred fifty-eight million, thirty-four thousand, nine hundred twenty-one".