77889063214490 has 64 divisors (see below), whose sum is σ = 160997264547840. Its totient is φ = 26832314456640.

The previous prime is 77889063214481. The next prime is 77889063214507. The reversal of 77889063214490 is 9441236098877.

It is a self number, because there is not a number n which added to its sum of digits gives 77889063214490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344249939 + ... + 344476121.

It is an arithmetic number, because the mean of its divisors is an integer number (2515582258560).

Almost surely, 2^{77889063214490} is an apocalyptic number.

77889063214490 is an abundant number, since it is smaller than the sum of its proper divisors (83108201333350).

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

77889063214490 is a wasteful number, since it uses less digits than its factorization.

77889063214490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390987.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 77889063214490 in words is "seventy-seven trillion, eight hundred eighty-nine billion, sixty-three million, two hundred fourteen thousand, four hundred ninety".