15250201640 has 16 divisors (see below), whose sum is σ = 34312953780. Its totient is φ = 6100080640.

The previous prime is 15250201619. The next prime is 15250201649. The reversal of 15250201640 is 4610205251.

It can be written as a sum of positive squares in 2 ways, for example, as 13221780196 + 2028421444 = 114986^2 + 45038^2 .

It is not an unprimeable number, because it can be changed into a prime (15250201649) 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, 190627481 + ... + 190627560.

Almost surely, 2^15250201640 is an apocalyptic number.

15250201640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15250201640 is an abundant number, since it is smaller than the sum of its proper divisors (19062752140).

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

15250201640 is a wasteful number, since it uses less digits than its factorization.

15250201640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381255052 (or 381255048 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 15250201640 its reverse (4610205251), we get a palindrome (19860406891).

The spelling of 15250201640 in words is "fifteen billion, two hundred fifty million, two hundred one thousand, six hundred forty".