99259569378 has 24 divisors (see below), whose sum is σ = 226381474800. Its totient is φ = 31345127064.

The previous prime is 99259569377. The next prime is 99259569379. The reversal of 99259569378 is 87396595299.

It is a happy number.

99259569378 is a `hidden beast` number, since 9 + 9 + 2 + 59 + 569 + 3 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (99259569377) and next prime (99259569379).

It is a super-2 number, since 2×99259569378² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99259569377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145115988 + ... + 145116671.

It is an arithmetic number, because the mean of its divisors is an integer number (9432561450).

Almost surely, 2^99259569378 is an apocalyptic number.

99259569378 is an abundant number, since it is smaller than the sum of its proper divisors (127121905422).

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

99259569378 is a wasteful number, since it uses less digits than its factorization.

99259569378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290232686 (or 290232683 counting only the distinct ones).

The product of its digits is 330674400, while the sum is 72.

The spelling of 99259569378 in words is "ninety-nine billion, two hundred fifty-nine million, five hundred sixty-nine thousand, three hundred seventy-eight".