331964663077 has 16 divisors (see below), whose sum is σ = 353064156912. Its totient is φ = 311703275520.

The previous prime is 331964663071. The next prime is 331964663099. The reversal of 331964663077 is 770366469133.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 46860992676 + 285103670401 = 216474^2 + 533951^2 .

It is a cyclic number.

It is not a de Polignac number, because 331964663077 - 2¹⁹ = 331964138789 is a prime.

It is a super-2 number, since 2×331964663077² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331964663071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1267948 + ... + 1507189.

It is an arithmetic number, because the mean of its divisors is an integer number (22066509807).

Almost surely, 2^331964663077 is an apocalyptic number.

331964663077 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

331964663077 is a deficient number, since it is larger than the sum of its proper divisors (21099493835).

331964663077 is a wasteful number, since it uses less digits than its factorization.

331964663077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775288.

The product of its (nonzero) digits is 10287648, while the sum is 55.

The spelling of 331964663077 in words is "three hundred thirty-one billion, nine hundred sixty-four million, six hundred sixty-three thousand, seventy-seven".