921145519613 has 8 divisors (see below), whose sum is σ = 1029395437056. Its totient is φ = 816980504800.

The previous prime is 921145519601. The next prime is 921145519627. The reversal of 921145519613 is 316915541129.

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 921145519613 - 2³⁴ = 903965650429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921145519663) 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, 1021225181 + ... + 1021226082.

It is an arithmetic number, because the mean of its divisors is an integer number (128674429632).

Almost surely, 2^921145519613 is an apocalyptic number.

It is an amenable number.

921145519613 is a deficient number, since it is larger than the sum of its proper divisors (108249917443).

921145519613 is a wasteful number, since it uses less digits than its factorization.

921145519613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042451315.

The product of its digits is 291600, while the sum is 47.

The spelling of 921145519613 in words is "nine hundred twenty-one billion, one hundred forty-five million, five hundred nineteen thousand, six hundred thirteen".