15240146251 has 16 divisors (see below), whose sum is σ = 17169804288. Its totient is φ = 13401597600.

The previous prime is 15240146239. The next prime is 15240146261. The reversal of 15240146251 is 15264104251.

It is a happy number.

It is not a de Polignac number, because 15240146251 - 2⁷ = 15240146123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15240146261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835636 + ... + 853678.

It is an arithmetic number, because the mean of its divisors is an integer number (1073112768).

Almost surely, 2^15240146251 is an apocalyptic number.

15240146251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15240146251 is a deficient number, since it is larger than the sum of its proper divisors (1929658037).

15240146251 is a wasteful number, since it uses less digits than its factorization.

15240146251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20562.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 15240146251 in words is "fifteen billion, two hundred forty million, one hundred forty-six thousand, two hundred fifty-one".