10551665536 has 128 divisors (see below), whose sum is σ = 23045692320. Its totient is φ = 4792320000.

The previous prime is 10551665507. The next prime is 10551665549. The reversal of 10551665536 is 63556615501.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×10551665536² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10551665492 and 10551665501.

It is a congruent number.

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, 9010231 + ... + 9011401.

Almost surely, 2^10551665536 is an apocalyptic number.

10551665536 is a gapful number since it is divisible by the number (16) 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 10551665536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11522846160).

10551665536 is an abundant number, since it is smaller than the sum of its proper divisors (12494026784).

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

10551665536 is a wasteful number, since it uses less digits than its factorization.

10551665536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 10551665536 in words is "ten billion, five hundred fifty-one million, six hundred sixty-five thousand, five hundred thirty-six".