100645802553878 has 8 divisors (see below), whose sum is σ = 152879700082080. Its totient is φ = 49685902526520.

The previous prime is 100645802553859. The next prime is 100645802553889. The reversal of 100645802553878 is 878355208546001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 100645802553878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318499375013 + ... + 318499375328.

It is an arithmetic number, because the mean of its divisors is an integer number (19109962510260).

Almost surely, 2^{100645802553878} is an apocalyptic number.

100645802553878 is a deficient number, since it is larger than the sum of its proper divisors (52233897528202).

100645802553878 is an equidigital number, since it uses as much as digits as its factorization.

100645802553878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636998750422.

The product of its (nonzero) digits is 64512000, while the sum is 62.

The spelling of 100645802553878 in words is "one hundred trillion, six hundred forty-five billion, eight hundred two million, five hundred fifty-three thousand, eight hundred seventy-eight".