119564499961 has 9 divisors (see below), whose sum is σ = 126195506181. Its totient is φ = 113265407484.

The previous prime is 119564499959. The next prime is 119564499979. The reversal of 119564499961 is 169994465911.

The square root of 119564499961 is 345781.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 119564499961 - 2¹ = 119564499959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 119564499893 and 119564499902.

It is not an unprimeable number, because it can be changed into a prime (119564499941) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6560740 + ... + 6578938.

It is an arithmetic number, because the mean of its divisors is an integer number (14021722909).

Almost surely, 2^119564499961 is an apocalyptic number.

119564499961 is the 345781-st square number.

119564499961 is the 172891-st centered octagonal number.

It is an amenable number.

119564499961 is a deficient number, since it is larger than the sum of its proper divisors (6631006220).

119564499961 is an frugal number, since it uses more digits than its factorization.

119564499961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36436 (or 18218 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 64.

Multiplying 119564499961 by its sum of digits (64), we get a square (7652127997504 = 2766248²).

The spelling of 119564499961 in words is "one hundred nineteen billion, five hundred sixty-four million, four hundred ninety-nine thousand, nine hundred sixty-one".