7618610623421 has 4 divisors (see below), whose sum is σ = 8706983569632. Its totient is φ = 6530237677212.

The previous prime is 7618610623391. The next prime is 7618610623433. The reversal of 7618610623421 is 1243260168167.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7618610623421 - 2³⁸ = 7343732716477 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 (7618610643421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544186473095 + ... + 544186473108.

It is an arithmetic number, because the mean of its divisors is an integer number (2176745892408).

Almost surely, 2^{7618610623421} is an apocalyptic number.

It is an amenable number.

7618610623421 is a deficient number, since it is larger than the sum of its proper divisors (1088372946211).

7618610623421 is a wasteful number, since it uses less digits than its factorization.

7618610623421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088372946210.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 7618610623421 in words is "seven trillion, six hundred eighteen billion, six hundred ten million, six hundred twenty-three thousand, four hundred twenty-one".