161700620702 has 16 divisors (see below), whose sum is σ = 250898509680. Its totient is φ = 78099225408.

The previous prime is 161700620629. The next prime is 161700620707. The reversal of 161700620702 is 207026007161.

It is a super-2 number, since 2×161700620702² (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 (161700620707) 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, 7849943 + ... + 7870514.

It is an arithmetic number, because the mean of its divisors is an integer number (15681156855).

Almost surely, 2^161700620702 is an apocalyptic number.

161700620702 is a deficient number, since it is larger than the sum of its proper divisors (89197888978).

161700620702 is a wasteful number, since it uses less digits than its factorization.

161700620702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15720635.

The product of its (nonzero) digits is 7056, while the sum is 32.

Adding to 161700620702 its reverse (207026007161), we get a palindrome (368726627863).

The spelling of 161700620702 in words is "one hundred sixty-one billion, seven hundred million, six hundred twenty thousand, seven hundred two".