1015501056550 has 48 divisors (see below), whose sum is σ = 1982757595392. Its totient is φ = 386212877600.

The previous prime is 1015501056533. The next prime is 1015501056553. The reversal of 1015501056550 is 556501055101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015501056553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2451796 + ... + 2835895.

It is an arithmetic number, because the mean of its divisors is an integer number (41307449904).

Almost surely, 2^{1015501056550} is an apocalyptic number.

1015501056550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1015501056550 is a deficient number, since it is larger than the sum of its proper divisors (967256538842).

1015501056550 is a wasteful number, since it uses less digits than its factorization.

1015501056550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287893 (or 5287888 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 1015501056550 in words is "one trillion, fifteen billion, five hundred one million, fifty-six thousand, five hundred fifty".