7816636138146 has 64 divisors (see below), whose sum is σ = 17540046623232. Its totient is φ = 2301698000000.

The previous prime is 7816636138123. The next prime is 7816636138159. The reversal of 7816636138146 is 6418316366187.

It is a super-2 number, since 2×7816636138146² (a number of 27 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 7816636138146.

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, 5075040 + ... + 6433451.

It is an arithmetic number, because the mean of its divisors is an integer number (274063228488).

Almost surely, 2^{7816636138146} is an apocalyptic number.

7816636138146 is an abundant number, since it is smaller than the sum of its proper divisors (9723410485086).

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

7816636138146 is a wasteful number, since it uses less digits than its factorization.

7816636138146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11508799.

The product of its digits is 20901888, while the sum is 60.

The spelling of 7816636138146 in words is "seven trillion, eight hundred sixteen billion, six hundred thirty-six million, one hundred thirty-eight thousand, one hundred forty-six".