99951664553 has 16 divisors (see below), whose sum is σ = 108160831296. Its totient is φ = 91817496000.

The previous prime is 99951664511. The next prime is 99951664559. The reversal of 99951664553 is 35546615999.

It is a cyclic number.

It is not a de Polignac number, because 99951664553 - 2¹⁰ = 99951663529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99951664559) 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, 4023950 + ... + 4048712.

It is an arithmetic number, because the mean of its divisors is an integer number (6760051956).

Almost surely, 2^99951664553 is an apocalyptic number.

It is an amenable number.

99951664553 is a deficient number, since it is larger than the sum of its proper divisors (8209166743).

99951664553 is a wasteful number, since it uses less digits than its factorization.

99951664553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26264.

The product of its digits is 39366000, while the sum is 62.

The spelling of 99951664553 in words is "ninety-nine billion, nine hundred fifty-one million, six hundred sixty-four thousand, five hundred fifty-three".