1231454550550 has 96 divisors (see below), whose sum is σ = 2680484152320. Its totient is φ = 412137331200.

The previous prime is 1231454550533. The next prime is 1231454550583. The reversal of 1231454550550 is 550554541321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6135790 + ... + 6333310.

It is an arithmetic number, because the mean of its divisors is an integer number (27921709920).

Almost surely, 2^{1231454550550} is an apocalyptic number.

1231454550550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231454550550 is an abundant number, since it is smaller than the sum of its proper divisors (1449029601770).

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

1231454550550 is a wasteful number, since it uses less digits than its factorization.

1231454550550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197966 (or 197961 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 1231454550550 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-four million, five hundred fifty thousand, five hundred fifty".