64155824099 has 16 divisors (see below), whose sum is σ = 67882277760. Its totient is φ = 60464880000.

The previous prime is 64155824069. The next prime is 64155824107. The reversal of 64155824099 is 99042855146.

It is a Cunningham number, because it is equal to 253290²-1.

It is a cyclic number.

It is not a de Polignac number, because 64155824099 - 2⁸ = 64155823843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64155824099.

It is not an unprimeable number, because it can be changed into a prime (64155824009) 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, 4805864 + ... + 4819194.

It is an arithmetic number, because the mean of its divisors is an integer number (4242642360).

Almost surely, 2^64155824099 is an apocalyptic number.

64155824099 is a deficient number, since it is larger than the sum of its proper divisors (3726453661).

64155824099 is a wasteful number, since it uses less digits than its factorization.

64155824099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14642.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 64155824099 in words is "sixty-four billion, one hundred fifty-five million, eight hundred twenty-four thousand, ninety-nine".