100402493880 has 64 divisors (see below), whose sum is σ = 324377292960. Its totient is φ = 24714459648.

The previous prime is 100402493861. The next prime is 100402493887. The reversal of 100402493880 is 88394204001.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100402493887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32178727 + ... + 32181846.

Almost surely, 2^100402493880 is an apocalyptic number.

100402493880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100402493880 is an abundant number, since it is smaller than the sum of its proper divisors (223974799080).

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

100402493880 is a wasteful number, since it uses less digits than its factorization.

100402493880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64360600 (or 64360596 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

Adding to 100402493880 its reverse (88394204001), we get a palindrome (188796697881).

The spelling of 100402493880 in words is "one hundred billion, four hundred two million, four hundred ninety-three thousand, eight hundred eighty".