161847744022040 has 16 divisors (see below), whose sum is σ = 364157424049680. Its totient is φ = 64739097608800.

The previous prime is 161847744022033. The next prime is 161847744022079. The reversal of 161847744022040 is 40220447748161.

It is a self number, because there is not a number n which added to its sum of digits gives 161847744022040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023096800236 + ... + 2023096800315.

It is an arithmetic number, because the mean of its divisors is an integer number (22759839003105).

Almost surely, 2^{161847744022040} is an apocalyptic number.

161847744022040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161847744022040 is an abundant number, since it is smaller than the sum of its proper divisors (202309680027640).

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

161847744022040 is a wasteful number, since it uses less digits than its factorization.

161847744022040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046193600562 (or 4046193600558 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 50.

The spelling of 161847744022040 in words is "one hundred sixty-one trillion, eight hundred forty-seven billion, seven hundred forty-four million, twenty-two thousand, forty".