11457321571550 has 48 divisors (see below), whose sum is σ = 21380752673712. Its totient is φ = 4567865836800.

The previous prime is 11457321571529. The next prime is 11457321571583. The reversal of 11457321571550 is 5517512375411.

It is a junction number, because it is equal to n+sod(n) for n = 11457321571495 and 11457321571504.

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, 22843769 + ... + 23339931.

It is an arithmetic number, because the mean of its divisors is an integer number (445432347369).

Almost surely, 2^{11457321571550} is an apocalyptic number.

11457321571550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11457321571550 is a deficient number, since it is larger than the sum of its proper divisors (9923431102162).

11457321571550 is a wasteful number, since it uses less digits than its factorization.

11457321571550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497693 (or 497688 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 47.

The spelling of 11457321571550 in words is "eleven trillion, four hundred fifty-seven billion, three hundred twenty-one million, five hundred seventy-one thousand, five hundred fifty".