10202988478690 has 64 divisors (see below), whose sum is σ = 22057584240384. Its totient is φ = 3324468365568.

The previous prime is 10202988478679. The next prime is 10202988478691. The reversal of 10202988478690 is 9687488920201.

It is a happy number.

It is a super-2 number, since 2×10202988478690² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10202988478691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45695349 + ... + 45918088.

It is an arithmetic number, because the mean of its divisors is an integer number (344649753756).

Almost surely, 2^{10202988478690} is an apocalyptic number.

10202988478690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10202988478690 is an abundant number, since it is smaller than the sum of its proper divisors (11854595761694).

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

10202988478690 is a wasteful number, since it uses less digits than its factorization.

10202988478690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91613531.

The product of its (nonzero) digits is 27869184, while the sum is 64.

The spelling of 10202988478690 in words is "ten trillion, two hundred two billion, nine hundred eighty-eight million, four hundred seventy-eight thousand, six hundred ninety".