331980061686 has 64 divisors (see below), whose sum is σ = 845360409600. Its totient is φ = 84536032896.

The previous prime is 331980061681. The next prime is 331980061727. The reversal of 331980061686 is 686160089133.

It is a super-2 number, since 2×331980061686² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331980061681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10467306 + ... + 10498973.

It is an arithmetic number, because the mean of its divisors is an integer number (13208756400).

Almost surely, 2^331980061686 is an apocalyptic number.

331980061686 is an abundant number, since it is smaller than the sum of its proper divisors (513380347914).

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

331980061686 is a wasteful number, since it uses less digits than its factorization.

331980061686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20966333.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 331980061686 in words is "three hundred thirty-one billion, nine hundred eighty million, sixty-one thousand, six hundred eighty-six".