802121937408 has 400 divisors, whose sum is σ = 2701875908160. Its totient is φ = 234681753600.

The previous prime is 802121937373. The next prime is 802121937473. The reversal of 802121937408 is 804739121208.

It is a happy number.

802121937408 is a `hidden beast` number, since 8 + 0 + 21 + 219 + 3 + 7 + 408 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13199253 + ... + 13259883.

Almost surely, 2^802121937408 is an apocalyptic number.

802121937408 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 802121937408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350937954080).

802121937408 is an abundant number, since it is smaller than the sum of its proper divisors (1899753970752).

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

802121937408 is a wasteful number, since it uses less digits than its factorization.

802121937408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60701 (or 60676 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 802121937408 in words is "eight hundred two billion, one hundred twenty-one million, nine hundred thirty-seven thousand, four hundred eight".