100601515405 has 8 divisors (see below), whose sum is σ = 120726812952. Its totient is φ = 80477882688.

The previous prime is 100601515379. The next prime is 100601515411. The reversal of 100601515405 is 504515106001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 49225853161 + 51375662244 = 221869^2 + 226662^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100601515405 - 2¹³ = 100601507213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 279162 + ... + 528331.

It is an arithmetic number, because the mean of its divisors is an integer number (15090851619).

Almost surely, 2^100601515405 is an apocalyptic number.

It is an amenable number.

100601515405 is a deficient number, since it is larger than the sum of its proper divisors (20125297547).

100601515405 is an equidigital number, since it uses as much as digits as its factorization.

100601515405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832415.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 100601515405 in words is "one hundred billion, six hundred one million, five hundred fifteen thousand, four hundred five".