161493469480 has 32 divisors (see below), whose sum is σ = 415268922240. Its totient is φ = 55369189440.

The previous prime is 161493469471. The next prime is 161493469481. The reversal of 161493469480 is 84964394161.

It is not an unprimeable number, because it can be changed into a prime (161493469481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288380916 + ... + 288381475.

It is an arithmetic number, because the mean of its divisors is an integer number (12977153820).

Almost surely, 2^161493469480 is an apocalyptic number.

161493469480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161493469480 is an abundant number, since it is smaller than the sum of its proper divisors (253775452760).

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

161493469480 is a wasteful number, since it uses less digits than its factorization.

161493469480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576762409 (or 576762405 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 161493469480 in words is "one hundred sixty-one billion, four hundred ninety-three million, four hundred sixty-nine thousand, four hundred eighty".