100038785978 has 16 divisors (see below), whose sum is σ = 160545423840. Its totient is φ = 46609959600.

The previous prime is 100038785969. The next prime is 100038785981. The reversal of 100038785978 is 879587830001.

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, 21576368 + ... + 21581003.

It is an arithmetic number, because the mean of its divisors is an integer number (10034088990).

Almost surely, 2^100038785978 is an apocalyptic number.

100038785978 is a deficient number, since it is larger than the sum of its proper divisors (60506637862).

100038785978 is a wasteful number, since it uses less digits than its factorization.

100038785978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43157453.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 100038785978 in words is "one hundred billion, thirty-eight million, seven hundred eighty-five thousand, nine hundred seventy-eight".