161372468250 has 192 divisors, whose sum is σ = 499987987200. Its totient is φ = 36788918400.

The previous prime is 161372468207. The next prime is 161372468267. The reversal of 161372468250 is 52864273161.

161372468250 is a `hidden beast` number, since 1 + 6 + 137 + 2 + 468 + 2 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 161372468196 and 161372468205.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6113581 + ... + 6139919.

It is an arithmetic number, because the mean of its divisors is an integer number (2604104100).

Almost surely, 2^161372468250 is an apocalyptic number.

161372468250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161372468250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249993993600).

161372468250 is an abundant number, since it is smaller than the sum of its proper divisors (338615518950).

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

161372468250 is a wasteful number, since it uses less digits than its factorization.

161372468250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26758 (or 26745 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 161372468250 in words is "one hundred sixty-one billion, three hundred seventy-two million, four hundred sixty-eight thousand, two hundred fifty".