161411927040 has 1980 divisors, whose sum is σ = 744083451936. Its totient is φ = 33331544064.

The previous prime is 161411926969. The next prime is 161411927041. The reversal of 161411927040 is 40729114161.

161411927040 is a `hidden beast` number, since 1 + 614 + 1 + 19 + 27 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 161411926986 and 161411927004.

It is not an unprimeable number, because it can be changed into a prime (161411927041) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 3434296297 + ... + 3434296343.

Almost surely, 2^161411927040 is an apocalyptic number.

161411927040 is a gapful number since it is divisible by the number (10) 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 161411927040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372041725968).

161411927040 is an abundant number, since it is smaller than the sum of its proper divisors (582671524896).

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

161411927040 is a wasteful number, since it uses less digits than its factorization.

161411927040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 161411927040 in words is "one hundred sixty-one billion, four hundred eleven million, nine hundred twenty-seven thousand, forty".