77396655090 has 16 divisors (see below), whose sum is σ = 185751972288. Its totient is φ = 20639108016.

The previous prime is 77396655079. The next prime is 77396655107. The reversal of 77396655090 is 9055669377.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77396655090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289944222 + ... + 1289944281.

It is an arithmetic number, because the mean of its divisors is an integer number (11609498268).

Almost surely, 2^77396655090 is an apocalyptic number.

77396655090 is an abundant number, since it is smaller than the sum of its proper divisors (108355317198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77396655090 is a wasteful number, since it uses less digits than its factorization.

77396655090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579888513.

The product of its (nonzero) digits is 10716300, while the sum is 57.

The spelling of 77396655090 in words is "seventy-seven billion, three hundred ninety-six million, six hundred fifty-five thousand, ninety".