618611409610 has 12 divisors (see below), whose sum is σ = 1113505014258. Its totient is φ = 247443568968.

The previous prime is 618611409569. The next prime is 618611409629. The reversal of 618611409610 is 16904116816.

It can be written as a sum of positive squares in only one way, i.e., 556750268649 + 61861140961 = 746157^2 + 248719^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2362831 + ... + 2611549.

Almost surely, 2^618611409610 is an apocalyptic number.

618611409610 is a deficient number, since it is larger than the sum of its proper divisors (494893604648).

618611409610 is an frugal number, since it uses more digits than its factorization.

618611409610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497445 (or 248726 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 618611409610 in words is "six hundred eighteen billion, six hundred eleven million, four hundred nine thousand, six hundred ten".