15253122640 has 40 divisors (see below), whose sum is σ = 40529727360. Its totient is φ = 5229641856.

The previous prime is 15253122629. The next prime is 15253122641. The reversal of 15253122640 is 4622135251.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15253122641) 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, 13618300 + ... + 13619419.

It is an arithmetic number, because the mean of its divisors is an integer number (1013243184).

Almost surely, 2^15253122640 is an apocalyptic number.

15253122640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15253122640 is an abundant number, since it is smaller than the sum of its proper divisors (25276604720).

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

15253122640 is a wasteful number, since it uses less digits than its factorization.

15253122640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27237739 (or 27237733 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 15253122640 its reverse (4622135251), we get a palindrome (19875257891).

The spelling of 15253122640 in words is "fifteen billion, two hundred fifty-three million, one hundred twenty-two thousand, six hundred forty".