20299116962520 has 1024 divisors, whose sum is σ = 77610016512000. Its totient is φ = 4675674931200.

The previous prime is 20299116962489. The next prime is 20299116962567. The reversal of 20299116962520 is 2526961199202.

20299116962520 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 9 + 1 + 1 + 6 + 9 + 625 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3588315532 + ... + 3588321188.

It is an arithmetic number, because the mean of its divisors is an integer number (75791031750).

Almost surely, 2^{20299116962520} is an apocalyptic number.

20299116962520 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 20299116962520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38805008256000).

20299116962520 is an abundant number, since it is smaller than the sum of its proper divisors (57310899549480).

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

20299116962520 is a wasteful number, since it uses less digits than its factorization.

20299116962520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921 (or 5911 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 20299116962520 in words is "twenty trillion, two hundred ninety-nine billion, one hundred sixteen million, nine hundred sixty-two thousand, five hundred twenty".