76780872002 has 4 divisors (see below), whose sum is σ = 115171308006. Its totient is φ = 38390436000.

The previous prime is 76780871987. The next prime is 76780872023. The reversal of 76780872002 is 20027808767.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59054346121 + 17726525881 = 243011^2 + 133141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19195217999 + ... + 19195218002.

Almost surely, 2^76780872002 is an apocalyptic number.

76780872002 is a deficient number, since it is larger than the sum of its proper divisors (38390436004).

76780872002 is a wasteful number, since it uses less digits than its factorization.

76780872002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38390436003.

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 76780872002 in words is "seventy-six billion, seven hundred eighty million, eight hundred seventy-two thousand, two".