15042231261 has 12 divisors (see below), whose sum is σ = 23005765692. Its totient is φ = 9438262656.

The previous prime is 15042231257. The next prime is 15042231263. The reversal of 15042231261 is 16213224051.

15042231261 is a `hidden beast` number, since 150 + 422 + 31 + 2 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11441511225 + 3600720036 = 106965^2 + 60006^2 .

It is not a de Polignac number, because 15042231261 - 2² = 15042231257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042231263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49157466 + ... + 49157771.

It is an arithmetic number, because the mean of its divisors is an integer number (1917147141).

Almost surely, 2^15042231261 is an apocalyptic number.

It is an amenable number.

15042231261 is a deficient number, since it is larger than the sum of its proper divisors (7963534431).

15042231261 is a wasteful number, since it uses less digits than its factorization.

15042231261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98315260 (or 98315257 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 15042231261 in words is "fifteen billion, forty-two million, two hundred thirty-one thousand, two hundred sixty-one".