1015423231550 has 48 divisors (see below), whose sum is σ = 2324538115872. Its totient is φ = 321364713600.

The previous prime is 1015423231549. The next prime is 1015423231579. The reversal of 1015423231550 is 551323245101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111580421 + ... + 111589520.

It is an arithmetic number, because the mean of its divisors is an integer number (48427877414).

Almost surely, 2^{1015423231550} is an apocalyptic number.

1015423231550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1015423231550 is an abundant number, since it is smaller than the sum of its proper divisors (1309114884322).

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

1015423231550 is a wasteful number, since it uses less digits than its factorization.

1015423231550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223169973 (or 223169968 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 1015423231550 its reverse (551323245101), we get a palindrome (1566746476651).

The spelling of 1015423231550 in words is "one trillion, fifteen billion, four hundred twenty-three million, two hundred thirty-one thousand, five hundred fifty".