99278655942 has 64 divisors (see below), whose sum is σ = 211229441280. Its totient is φ = 31018646016.

The previous prime is 99278655919. The next prime is 99278655943. The reversal of 99278655942 is 24955687299.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99278655943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10448938 + ... + 10458434.

It is an arithmetic number, because the mean of its divisors is an integer number (3300460020).

Almost surely, 2^99278655942 is an apocalyptic number.

99278655942 is an abundant number, since it is smaller than the sum of its proper divisors (111950785338).

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

99278655942 is a wasteful number, since it uses less digits than its factorization.

99278655942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10485.

The product of its digits is 97977600, while the sum is 66.

The spelling of 99278655942 in words is "ninety-nine billion, two hundred seventy-eight million, six hundred fifty-five thousand, nine hundred forty-two".