76849917987 has 16 divisors (see below), whose sum is σ = 108527126400. Its totient is φ = 48204834432.

The previous prime is 76849917983. The next prime is 76849918037. The reversal of 76849917987 is 78971994867.

It is not a de Polignac number, because 76849917987 - 2² = 76849917983 is a prime.

It is a super-2 number, since 2×76849917987² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76849917983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60133 + ... + 396630.

It is an arithmetic number, because the mean of its divisors is an integer number (6782945400).

Almost surely, 2^76849917987 is an apocalyptic number.

76849917987 is a deficient number, since it is larger than the sum of its proper divisors (31677208413).

76849917987 is a wasteful number, since it uses less digits than its factorization.

76849917987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460082.

The product of its digits is 384072192, while the sum is 75.

The spelling of 76849917987 in words is "seventy-six billion, eight hundred forty-nine million, nine hundred seventeen thousand, nine hundred eighty-seven".