1015661443552 has 48 divisors (see below), whose sum is σ = 2286805288320. Its totient is φ = 434984992128.

The previous prime is 1015661443547. The next prime is 1015661443591. The reversal of 1015661443552 is 2553441665101.

It is a junction number, because it is equal to n+sod(n) for n = 1015661443499 and 1015661443508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227058 + ... + 1880689.

It is an arithmetic number, because the mean of its divisors is an integer number (47641776840).

Almost surely, 2^{1015661443552} is an apocalyptic number.

It is an amenable number.

1015661443552 is an abundant number, since it is smaller than the sum of its proper divisors (1271143844768).

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

1015661443552 is a wasteful number, since it uses less digits than its factorization.

1015661443552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109223 (or 3109215 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 1015661443552 in words is "one trillion, fifteen billion, six hundred sixty-one million, four hundred forty-three thousand, five hundred fifty-two".