161574733740 has 96 divisors (see below), whose sum is σ = 517401884160. Its totient is φ = 36905458176.

The previous prime is 161574733709. The next prime is 161574733759. The reversal of 161574733740 is 47337475161.

It is a super-2 number, since 2×161574733740² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161574733740.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467631 + ... + 736089.

It is an arithmetic number, because the mean of its divisors is an integer number (5389602960).

Almost surely, 2^161574733740 is an apocalyptic number.

161574733740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161574733740 is an abundant number, since it is smaller than the sum of its proper divisors (355827150420).

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

161574733740 is a wasteful number, since it uses less digits than its factorization.

161574733740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269911 (or 269909 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 161574733740 in words is "one hundred sixty-one billion, five hundred seventy-four million, seven hundred thirty-three thousand, seven hundred forty".