100278887128 has 32 divisors (see below), whose sum is σ = 216523676160. Its totient is φ = 42648596640.

The previous prime is 100278887101. The next prime is 100278887143. The reversal of 100278887128 is 821788872001.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6827376 + ... + 6842047.

It is an arithmetic number, because the mean of its divisors is an integer number (6766364880).

Almost surely, 2^100278887128 is an apocalyptic number.

It is an amenable number.

100278887128 is an abundant number, since it is smaller than the sum of its proper divisors (116244789032).

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

100278887128 is a wasteful number, since it uses less digits than its factorization.

100278887128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13669567 (or 13669563 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 52.

The spelling of 100278887128 in words is "one hundred billion, two hundred seventy-eight million, eight hundred eighty-seven thousand, one hundred twenty-eight".