100661061405 has 8 divisors (see below), whose sum is σ = 161057698272. Its totient is φ = 53685899408.

The previous prime is 100661061379. The next prime is 100661061433. The reversal of 100661061405 is 504160166001.

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 100661061405 - 2²⁹ = 100124190493 is a prime.

It is a congruent number.

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, 3355368699 + ... + 3355368728.

It is an arithmetic number, because the mean of its divisors is an integer number (20132212284).

Almost surely, 2^100661061405 is an apocalyptic number.

100661061405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100661061405 is a deficient number, since it is larger than the sum of its proper divisors (60396636867).

100661061405 is an equidigital number, since it uses as much as digits as its factorization.

100661061405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710737435.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 100661061405 in words is "one hundred billion, six hundred sixty-one million, sixty-one thousand, four hundred five".