77398170038 has 16 divisors (see below), whose sum is σ = 132686151840. Its totient is φ = 33169750656.

The previous prime is 77398170029. The next prime is 77398170077. The reversal of 77398170038 is 83007189377.

It is a congruent number.

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, 944720 + ... + 1023372.

It is an arithmetic number, because the mean of its divisors is an integer number (8292884490).

Almost surely, 2^77398170038 is an apocalyptic number.

77398170038 is a deficient number, since it is larger than the sum of its proper divisors (55287981802).

77398170038 is a wasteful number, since it uses less digits than its factorization.

77398170038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148951.

The product of its (nonzero) digits is 1778112, while the sum is 53.

Multiplying 77398170038 by its sum of digits (53), we get a palindrome (4102103012014).

The spelling of 77398170038 in words is "seventy-seven billion, three hundred ninety-eight million, one hundred seventy thousand, thirty-eight".