161210799340 has 24 divisors (see below), whose sum is σ = 338891373072. Its totient is φ = 64417901760.

The previous prime is 161210799319. The next prime is 161210799341. The reversal of 161210799340 is 43997012161.

It is not an unprimeable number, because it can be changed into a prime (161210799341) 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, 4131219 + ... + 4170058.

It is an arithmetic number, because the mean of its divisors is an integer number (14120473878).

Almost surely, 2^161210799340 is an apocalyptic number.

161210799340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161210799340 is an abundant number, since it is smaller than the sum of its proper divisors (177680573732).

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

161210799340 is a wasteful number, since it uses less digits than its factorization.

161210799340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8302257 (or 8302255 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 161210799340 in words is "one hundred sixty-one billion, two hundred ten million, seven hundred ninety-nine thousand, three hundred forty".