15105500650661 has 8 divisors (see below), whose sum is σ = 15318661011264. Its totient is φ = 14892351591040.

The previous prime is 15105500650657. The next prime is 15105500650697. The reversal of 15105500650661 is 16605600550151.

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 15105500650661 - 2² = 15105500650657 is a prime.

It is a super-2 number, since 2×15105500650661² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15105502650661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114860 + ... + 5497653.

It is an arithmetic number, because the mean of its divisors is an integer number (1914832626408).

Almost surely, 2^{15105500650661} is an apocalyptic number.

It is an amenable number.

15105500650661 is a deficient number, since it is larger than the sum of its proper divisors (213160360603).

15105500650661 is an equidigital number, since it uses as much as digits as its factorization.

15105500650661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650491.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 15105500650661 in words is "fifteen trillion, one hundred five billion, five hundred million, six hundred fifty thousand, six hundred sixty-one".