15150001565561 has 8 divisors (see below), whose sum is σ = 15188139023904. Its totient is φ = 15111910477440.

The previous prime is 15150001565483. The next prime is 15150001565563. The reversal of 15150001565561 is 16556510005151.

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 15150001565561 - 2¹⁸ = 15150001303417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15150001565563) 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, 10938251 + ... + 12245216.

It is an arithmetic number, because the mean of its divisors is an integer number (1898517377988).

Almost surely, 2^{15150001565561} is an apocalyptic number.

It is an amenable number.

15150001565561 is a deficient number, since it is larger than the sum of its proper divisors (38137458343).

15150001565561 is an equidigital number, since it uses as much as digits as its factorization.

15150001565561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23185111.

The product of its (nonzero) digits is 112500, while the sum is 41.

The spelling of 15150001565561 in words is "fifteen trillion, one hundred fifty billion, one million, five hundred sixty-five thousand, five hundred sixty-one".