10551656550 has 24 divisors (see below), whose sum is σ = 26168108616. Its totient is φ = 2813775040.

The previous prime is 10551656513. The next prime is 10551656569. The reversal of 10551656550 is 5565615501.

It is a super-2 number, since 2×10551656550² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10551656499 and 10551656508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35172039 + ... + 35172338.

It is an arithmetic number, because the mean of its divisors is an integer number (1090337859).

Almost surely, 2^10551656550 is an apocalyptic number.

10551656550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10551656550 is an abundant number, since it is smaller than the sum of its proper divisors (15616452066).

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

10551656550 is a wasteful number, since it uses less digits than its factorization.

10551656550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70344392 (or 70344387 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 10551656550 in words is "ten billion, five hundred fifty-one million, six hundred fifty-six thousand, five hundred fifty".