2154080696520 has 64 divisors (see below), whose sum is σ = 6464274747840. Its totient is φ = 574240838400.

The previous prime is 2154080696489. The next prime is 2154080696533. The reversal of 2154080696520 is 256960804512.

It is a super-2 number, since 2×2154080696520² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2154080696520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2439826 + ... + 3203265.

It is an arithmetic number, because the mean of its divisors is an integer number (101004292935).

Almost surely, 2^{2154080696520} is an apocalyptic number.

2154080696520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154080696520 is an abundant number, since it is smaller than the sum of its proper divisors (4310194051320).

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

2154080696520 is a wasteful number, since it uses less digits than its factorization.

2154080696520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646286 (or 5646282 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 2154080696520 in words is "two trillion, one hundred fifty-four billion, eighty million, six hundred ninety-six thousand, five hundred twenty".