77222638090 has 64 divisors (see below), whose sum is σ = 153631924992. Its totient is φ = 27772416000.

The previous prime is 77222638063. The next prime is 77222638117. The reversal of 77222638090 is 9083622277.

It is an interprime number because it is at equal distance from previous prime (77222638063) and next prime (77222638117).

It is a self number, because there is not a number n which added to its sum of digits gives 77222638090.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715690 + ... + 816490.

It is an arithmetic number, because the mean of its divisors is an integer number (2400498828).

Almost surely, 2^77222638090 is an apocalyptic number.

77222638090 is a deficient number, since it is larger than the sum of its proper divisors (76409286902).

77222638090 is a wasteful number, since it uses less digits than its factorization.

77222638090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100975.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 77222638090 in words is "seventy-seven billion, two hundred twenty-two million, six hundred thirty-eight thousand, ninety".