99913089378 has 16 divisors (see below), whose sum is σ = 203102018496. Its totient is φ = 32758389840.

The previous prime is 99913089377. The next prime is 99913089427. The reversal of 99913089378 is 87398031999.

It is not an unprimeable number, because it can be changed into a prime (99913089377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136492926 + ... + 136493657.

It is an arithmetic number, because the mean of its divisors is an integer number (12693876156).

Almost surely, 2^99913089378 is an apocalyptic number.

99913089378 is an abundant number, since it is smaller than the sum of its proper divisors (103188929118).

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

99913089378 is a wasteful number, since it uses less digits than its factorization.

99913089378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272986649.

The product of its (nonzero) digits is 26453952, while the sum is 66.

The spelling of 99913089378 in words is "ninety-nine billion, nine hundred thirteen million, eighty-nine thousand, three hundred seventy-eight".