78853767490 has 16 divisors (see below), whose sum is σ = 141994829952. Its totient is φ = 31528607344.

The previous prime is 78853767467. The next prime is 78853767511. The reversal of 78853767490 is 9476735887.

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, 1586764 + ... + 1635703.

It is an arithmetic number, because the mean of its divisors is an integer number (8874676872).

Almost surely, 2^78853767490 is an apocalyptic number.

78853767490 is a deficient number, since it is larger than the sum of its proper divisors (63141062462).

78853767490 is a wasteful number, since it uses less digits than its factorization.

78853767490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224921.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 78853767490 in words is "seventy-eight billion, eight hundred fifty-three million, seven hundred sixty-seven thousand, four hundred ninety".