10551959661 has 16 divisors (see below), whose sum is σ = 14151481344. Its totient is φ = 6993659904.

The previous prime is 10551959657. The next prime is 10551959669. The reversal of 10551959661 is 16695915501.

It is not a de Polignac number, because 10551959661 - 2² = 10551959657 is a prime.

It is a super-2 number, since 2×10551959661² (a number of 21 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 10551959661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10551959669) 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, 342100 + ... + 371666.

It is an arithmetic number, because the mean of its divisors is an integer number (884467584).

Almost surely, 2^10551959661 is an apocalyptic number.

It is an amenable number.

10551959661 is a deficient number, since it is larger than the sum of its proper divisors (3599521683).

10551959661 is a wasteful number, since it uses less digits than its factorization.

10551959661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30260.

The product of its (nonzero) digits is 364500, while the sum is 48.

The spelling of 10551959661 in words is "ten billion, five hundred fifty-one million, nine hundred fifty-nine thousand, six hundred sixty-one".