77814102990 has 32 divisors (see below), whose sum is σ = 201119528736. Its totient is φ = 19154240640.

The previous prime is 77814102967. The next prime is 77814103001. The reversal of 77814102990 is 9920141877.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99761281 + ... + 99762060.

It is an arithmetic number, because the mean of its divisors is an integer number (6284985273).

Almost surely, 2^77814102990 is an apocalyptic number.

77814102990 is an abundant number, since it is smaller than the sum of its proper divisors (123305425746).

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

77814102990 is a wasteful number, since it uses less digits than its factorization.

77814102990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199523364.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 77814102990 in words is "seventy-seven billion, eight hundred fourteen million, one hundred two thousand, nine hundred ninety".