264431766772 has 12 divisors (see below), whose sum is σ = 462759198916. Its totient is φ = 132214852800.

The previous prime is 264431766743. The next prime is 264431766779. The reversal of 264431766772 is 277667134462.

It can be written as a sum of positive squares in 2 ways, for example, as 96047927056 + 168383839716 = 309916^2 + 410346^2 .

It is a super-2 number, since 2×264431766772² (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 (264431766779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827272 + ... + 1101472.

Almost surely, 2^264431766772 is an apocalyptic number.

It is an amenable number.

264431766772 is a deficient number, since it is larger than the sum of its proper divisors (198327432144).

264431766772 is a wasteful number, since it uses less digits than its factorization.

264431766772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515298 (or 515296 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 55.

The spelling of 264431766772 in words is "two hundred sixty-four billion, four hundred thirty-one million, seven hundred sixty-six thousand, seven hundred seventy-two".