76960191889 has 9 divisors (see below), whose sum is σ = 89527380201. Its totient is φ = 65964214260.

The previous prime is 76960191883. The next prime is 76960191907. The reversal of 76960191889 is 98819106967.

The square root of 76960191889 is 277417.

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

It is not a de Polignac number, because 76960191889 - 2¹³ = 76960183697 is a prime.

It is a super-2 number, since 2×76960191889² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 76960191889.

It is not an unprimeable number, because it can be changed into a prime (76960191883) 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, 1922104 + ... + 1961734.

It is an arithmetic number, because the mean of its divisors is an integer number (9947486689).

Almost surely, 2^76960191889 is an apocalyptic number.

76960191889 is the 277417-th square number.

76960191889 is the 138709-th centered octagonal number.

It is an amenable number.

76960191889 is a deficient number, since it is larger than the sum of its proper divisors (12567188312).

76960191889 is an frugal number, since it uses more digits than its factorization.

76960191889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79276 (or 39638 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 64.

Multiplying 76960191889 by its sum of digits (64), we get a square (4925452280896 = 2219336²).

The spelling of 76960191889 in words is "seventy-six billion, nine hundred sixty million, one hundred ninety-one thousand, eight hundred eighty-nine".