82435993778 has 16 divisors (see below), whose sum is σ = 123838656000. Its totient is φ = 41156471952.

The previous prime is 82435993753. The next prime is 82435993781. The reversal of 82435993778 is 87739953428.

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, 10074893 + ... + 10083071.

It is an arithmetic number, because the mean of its divisors is an integer number (7739916000).

Almost surely, 2^82435993778 is an apocalyptic number.

82435993778 is a deficient number, since it is larger than the sum of its proper divisors (41402662222).

82435993778 is a wasteful number, since it uses less digits than its factorization.

82435993778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15089.

The product of its digits is 91445760, while the sum is 65.

The spelling of 82435993778 in words is "eighty-two billion, four hundred thirty-five million, nine hundred ninety-three thousand, seven hundred seventy-eight".