68386872190 has 128 divisors (see below), whose sum is σ = 154046914560. Its totient is φ = 21282213888.

The previous prime is 68386872133. The next prime is 68386872209. The reversal of 68386872190 is 9127868386.

It is a super-2 number, since 2×68386872190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18905262 + ... + 18908878.

It is an arithmetic number, because the mean of its divisors is an integer number (1203491520).

Almost surely, 2^68386872190 is an apocalyptic number.

68386872190 is an abundant number, since it is smaller than the sum of its proper divisors (85660042370).

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

68386872190 is a wasteful number, since it uses less digits than its factorization.

68386872190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 68386872190 in words is "sixty-eight billion, three hundred eighty-six million, eight hundred seventy-two thousand, one hundred ninety".