99479671653 has 24 divisors (see below), whose sum is σ = 133677151488. Its totient is φ = 65804459776.

The previous prime is 99479671639. The next prime is 99479671657. The reversal of 99479671653 is 35617697499.

It is a happy number.

It is not a de Polignac number, because 99479671653 - 2⁸ = 99479671397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99479671657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54568300 + ... + 54570122.

It is an arithmetic number, because the mean of its divisors is an integer number (5569881312).

Almost surely, 2^99479671653 is an apocalyptic number.

It is an amenable number.

99479671653 is a deficient number, since it is larger than the sum of its proper divisors (34197479835).

99479671653 is a wasteful number, since it uses less digits than its factorization.

99479671653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633 (or 2406 counting only the distinct ones).

The product of its digits is 77157360, while the sum is 66.

The spelling of 99479671653 in words is "ninety-nine billion, four hundred seventy-nine million, six hundred seventy-one thousand, six hundred fifty-three".