161449720470 has 48 divisors (see below), whose sum is σ = 420050781072. Its totient is φ = 43024386240.

The previous prime is 161449720451. The next prime is 161449720499. The reversal of 161449720470 is 74027944161.

161449720470 is a `hidden beast` number, since 1 + 614 + 4 + 9 + 7 + 20 + 4 + 7 + 0 = 666.

It is a super-2 number, since 2×161449720470² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466396 + ... + 735135.

It is an arithmetic number, because the mean of its divisors is an integer number (8751057939).

Almost surely, 2^161449720470 is an apocalyptic number.

161449720470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161449720470 is an abundant number, since it is smaller than the sum of its proper divisors (258601060602).

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

161449720470 is a wasteful number, since it uses less digits than its factorization.

161449720470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203037 (or 1203034 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 161449720470 in words is "one hundred sixty-one billion, four hundred forty-nine million, seven hundred twenty thousand, four hundred seventy".