16620913492560 has 1920 divisors, whose sum is σ = 70173044637696. Its totient is φ = 3480489492480.

The previous prime is 16620913492553. The next prime is 16620913492567. The reversal of 16620913492560 is 6529431902661.

16620913492560 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 0 + 91 + 3 + 492 + 5 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (16620913492553) and next prime (16620913492567).

It is a junction number, because it is equal to n+sod(n) for n = 16620913492497 and 16620913492506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16620913492567) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 4878458377 + ... + 4878461783.

Almost surely, 2^{16620913492560} is an apocalyptic number.

16620913492560 is a gapful number since it is divisible by the number (10) 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 16620913492560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35086522318848).

16620913492560 is an abundant number, since it is smaller than the sum of its proper divisors (53552131145136).

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

16620913492560 is a wasteful number, since it uses less digits than its factorization.

16620913492560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553 (or 3544 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 16620913492560 in words is "sixteen trillion, six hundred twenty billion, nine hundred thirteen million, four hundred ninety-two thousand, five hundred sixty".