15012152261 has 4 divisors (see below), whose sum is σ = 15052399692. Its totient is φ = 14971904832.

The previous prime is 15012152257. The next prime is 15012152291. The reversal of 15012152261 is 16225121051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16225121051 = 61 ⋅265985591.

It can be written as a sum of positive squares in 2 ways, for example, as 2809636036 + 12202516225 = 53006^2 + 110465^2 .

It is a cyclic number.

It is not a de Polignac number, because 15012152261 - 2² = 15012152257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15012152261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15012152231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20123156 + ... + 20123901.

It is an arithmetic number, because the mean of its divisors is an integer number (3763099923).

Almost surely, 2^15012152261 is an apocalyptic number.

It is an amenable number.

15012152261 is a deficient number, since it is larger than the sum of its proper divisors (40247431).

15012152261 is an equidigital number, since it uses as much as digits as its factorization.

15012152261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40247430.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 15012152261 in words is "fifteen billion, twelve million, one hundred fifty-two thousand, two hundred sixty-one".