1015254722640 has 160 divisors (see below), whose sum is σ = 3284661196800. Its totient is φ = 258921507328.

The previous prime is 1015254722639. The next prime is 1015254722641. The reversal of 1015254722640 is 462274525101.

It is an interprime number because it is at equal distance from previous prime (1015254722639) and next prime (1015254722641).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015254722641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48007909 + ... + 48029051.

It is an arithmetic number, because the mean of its divisors is an integer number (20529132480).

Almost surely, 2^{1015254722640} is an apocalyptic number.

1015254722640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1015254722640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642330598400).

1015254722640 is an abundant number, since it is smaller than the sum of its proper divisors (2269406474160).

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

1015254722640 is a wasteful number, since it uses less digits than its factorization.

1015254722640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29881 (or 29875 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 1015254722640 in words is "one trillion, fifteen billion, two hundred fifty-four million, seven hundred twenty-two thousand, six hundred forty".