161707630630 has 128 divisors (see below), whose sum is σ = 362839357440. Its totient is φ = 50523264000.

The previous prime is 161707630561. The next prime is 161707630631. The reversal of 161707630630 is 36036707161.

It is a happy number.

It is a super-2 number, since 2×161707630630² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161707630631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71837005 + ... + 71839255.

It is an arithmetic number, because the mean of its divisors is an integer number (2834682480).

Almost surely, 2^161707630630 is an apocalyptic number.

161707630630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161707630630 is an abundant number, since it is smaller than the sum of its proper divisors (201131726810).

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

161707630630 is a wasteful number, since it uses less digits than its factorization.

161707630630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254.

The product of its (nonzero) digits is 95256, while the sum is 40.

The spelling of 161707630630 in words is "one hundred sixty-one billion, seven hundred seven million, six hundred thirty thousand, six hundred thirty".