100391681504 has 12 divisors (see below), whose sum is σ = 197646123024. Its totient is φ = 50195840736.

The previous prime is 100391681503. The next prime is 100391681543. The reversal of 100391681504 is 405186193001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100391681503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1568619992 + ... + 1568620055.

It is an arithmetic number, because the mean of its divisors is an integer number (16470510252).

Almost surely, 2^100391681504 is an apocalyptic number.

It is an amenable number.

100391681504 is a deficient number, since it is larger than the sum of its proper divisors (97254441520).

100391681504 is an equidigital number, since it uses as much as digits as its factorization.

100391681504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137240057 (or 3137240049 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 100391681504 in words is "one hundred billion, three hundred ninety-one million, six hundred eighty-one thousand, five hundred four".