1361641872432 has 80 divisors (see below), whose sum is σ = 3550944510720. Its totient is φ = 449576046336.

The previous prime is 1361641872421. The next prime is 1361641872467. The reversal of 1361641872432 is 2342781461631.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49975069 + ... + 50002307.

It is an arithmetic number, because the mean of its divisors is an integer number (44386806384).

Almost surely, 2^{1361641872432} is an apocalyptic number.

1361641872432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361641872432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775472255360).

1361641872432 is an abundant number, since it is smaller than the sum of its proper divisors (2189302638288).

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

1361641872432 is a wasteful number, since it uses less digits than its factorization.

1361641872432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37090 (or 37084 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The spelling of 1361641872432 in words is "one trillion, three hundred sixty-one billion, six hundred forty-one million, eight hundred seventy-two thousand, four hundred thirty-two".