20402651304000 has 1568 divisors, whose sum is σ = 86893855915776. Its totient is φ = 4646489702400.

The previous prime is 20402651303959. The next prime is 20402651304023. The reversal of 20402651304000 is 40315620402.

20402651304000 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 2 + 651 + 3 + 0 + 4 + 0 + 0 + 0 = 666.

It is a super-2 number, since 2×20402651304000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 13757687259 + ... + 13757688741.

Almost surely, 2^{20402651304000} is an apocalyptic number.

20402651304000 is a gapful number since it is divisible by the number (20) 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 20402651304000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43446927957888).

20402651304000 is an abundant number, since it is smaller than the sum of its proper divisors (66491204611776).

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

20402651304000 is an equidigital number, since it uses as much as digits as its factorization.

20402651304000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20402651304000 its reverse (40315620402), we get a palindrome (20442966924402).

The spelling of 20402651304000 in words is "twenty trillion, four hundred two billion, six hundred fifty-one million, three hundred four thousand".