7138658386650 has 72 divisors (see below), whose sum is σ = 20594301032160. Its totient is φ = 1631693343840.

The previous prime is 7138658386589. The next prime is 7138658386663. The reversal of 7138658386650 is 566838568317.

It is a super-2 number, since 2×7138658386650² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 485615670 + ... + 485630369.

It is an arithmetic number, because the mean of its divisors is an integer number (286031958780).

Almost surely, 2^{7138658386650} is an apocalyptic number.

7138658386650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7138658386650 is an abundant number, since it is smaller than the sum of its proper divisors (13455642645510).

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

7138658386650 is a wasteful number, since it uses less digits than its factorization.

7138658386650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971246068 (or 971246056 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 66.

The spelling of 7138658386650 in words is "seven trillion, one hundred thirty-eight billion, six hundred fifty-eight million, three hundred eighty-six thousand, six hundred fifty".