1015813395552 has 192 divisors, whose sum is σ = 2776277597184. Its totient is φ = 324944916480.

The previous prime is 1015813395529. The next prime is 1015813395587. The reversal of 1015813395552 is 2555933185101.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88549177 + ... + 88560647.

It is an arithmetic number, because the mean of its divisors is an integer number (14459779152).

Almost surely, 2^{1015813395552} is an apocalyptic number.

1015813395552 is a gapful number since it is divisible by the number (12) 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 1015813395552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388138798592).

1015813395552 is an abundant number, since it is smaller than the sum of its proper divisors (1760464201632).

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

1015813395552 is a wasteful number, since it uses less digits than its factorization.

1015813395552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861 (or 11853 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 1015813395552 in words is "one trillion, fifteen billion, eight hundred thirteen million, three hundred ninety-five thousand, five hundred fifty-two".