77822238402 has 32 divisors (see below), whose sum is σ = 172948930560. Its totient is φ = 25939152720.

The previous prime is 77822238367. The next prime is 77822238407. The reversal of 77822238402 is 20483222877.

77822238402 is a `hidden beast` number, since 7 + 7 + 8 + 2 + 2 + 238 + 402 = 666.

It is not an unprimeable number, because it can be changed into a prime (77822238407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127652 + ... + 1194672.

It is an arithmetic number, because the mean of its divisors is an integer number (5404654080).

Almost surely, 2^77822238402 is an apocalyptic number.

77822238402 is an abundant number, since it is smaller than the sum of its proper divisors (95126692158).

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

77822238402 is a wasteful number, since it uses less digits than its factorization.

77822238402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88535 (or 88529 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 77822238402 in words is "seventy-seven billion, eight hundred twenty-two million, two hundred thirty-eight thousand, four hundred two".