2154357586656 has 192 divisors, whose sum is σ = 6984111133440. Its totient is φ = 640517829120.

The previous prime is 2154357586613. The next prime is 2154357586681. The reversal of 2154357586656 is 6566857534512.

2154357586656 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 3 + 575 + 8 + 6 + 6 + 56 = 666.

It is a super-2 number, since 2×2154357586656² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2154357586593 and 2154357586602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1634770 + ... + 2642193.

It is an arithmetic number, because the mean of its divisors is an integer number (36375578820).

Almost surely, 2^{2154357586656} is an apocalyptic number.

It is an amenable number.

2154357586656 is an abundant number, since it is smaller than the sum of its proper divisors (4829753546784).

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

2154357586656 is a wasteful number, since it uses less digits than its factorization.

2154357586656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277046 (or 4277032 counting only the distinct ones).

The product of its digits is 181440000, while the sum is 63.

The spelling of 2154357586656 in words is "two trillion, one hundred fifty-four billion, three hundred fifty-seven million, five hundred eighty-six thousand, six hundred fifty-six".