181401426733764 has 24 divisors (see below), whose sum is σ = 423319230569088. Its totient is φ = 60460108693600.

The previous prime is 181401426733711. The next prime is 181401426733777. The reversal of 181401426733764 is 467337624104181.

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, 879086412 + ... + 879292739.

It is an arithmetic number, because the mean of its divisors is an integer number (17638301273712).

Almost surely, 2^{181401426733764} is an apocalyptic number.

It is an amenable number.

181401426733764 is an abundant number, since it is smaller than the sum of its proper divisors (241917803835324).

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

181401426733764 is a wasteful number, since it uses less digits than its factorization.

181401426733764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758387755 (or 1758387753 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 181401426733764 in words is "one hundred eighty-one trillion, four hundred one billion, four hundred twenty-six million, seven hundred thirty-three thousand, seven hundred sixty-four".