10621656354 has 32 divisors (see below), whose sum is σ = 21602295936. Its totient is φ = 3480779520.

The previous prime is 10621656343. The next prime is 10621656359. The reversal of 10621656354 is 45365612601.

It is a super-2 number, since 2×10621656354² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10621656359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878619 + ... + 890625.

It is an arithmetic number, because the mean of its divisors is an integer number (675071748).

Almost surely, 2^10621656354 is an apocalyptic number.

10621656354 is an abundant number, since it is smaller than the sum of its proper divisors (10980639582).

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

10621656354 is a wasteful number, since it uses less digits than its factorization.

10621656354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14490.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 10621656354 in words is "ten billion, six hundred twenty-one million, six hundred fifty-six thousand, three hundred fifty-four".