15071518242 has 72 divisors (see below), whose sum is σ = 36385539372. Its totient is φ = 4504515840.

The previous prime is 15071518213. The next prime is 15071518243. The reversal of 15071518242 is 24281517051.

It is a happy number.

15071518242 is a `hidden beast` number, since 1 + 50 + 71 + 518 + 24 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13623791841 + 1447726401 = 116721^2 + 38049^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15071518197 and 15071518206.

It is not an unprimeable number, because it can be changed into a prime (15071518243) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 111598 + ... + 206390.

Almost surely, 2^15071518242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15071518242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18192769686).

15071518242 is an abundant number, since it is smaller than the sum of its proper divisors (21314021130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15071518242 is a wasteful number, since it uses less digits than its factorization.

15071518242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94896 (or 94882 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 15071518242 in words is "fifteen billion, seventy-one million, five hundred eighteen thousand, two hundred forty-two".