838730072102 has 64 divisors (see below), whose sum is σ = 1454240342016. Its totient is φ = 359768787840.

The previous prime is 838730072083. The next prime is 838730072123. The reversal of 838730072102 is 201270037838.

It is a super-2 number, since 2×838730072102² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 838730072102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4825988 + ... + 4996760.

It is an arithmetic number, because the mean of its divisors is an integer number (22722505344).

Almost surely, 2^838730072102 is an apocalyptic number.

838730072102 is a deficient number, since it is larger than the sum of its proper divisors (615510269914).

838730072102 is a wasteful number, since it uses less digits than its factorization.

838730072102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171045.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 838730072102 in words is "eight hundred thirty-eight billion, seven hundred thirty million, seventy-two thousand, one hundred two".