1264440073764 has 24 divisors (see below), whose sum is σ = 3371840196928. Its totient is φ = 361268592480.

The previous prime is 1264440073753. The next prime is 1264440073777. The reversal of 1264440073764 is 4673700444621.

It is a super-4 number, since 4×1264440073764⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7526428927 + ... + 7526429094.

Almost surely, 2^{1264440073764} is an apocalyptic number.

1264440073764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1264440073764 is an abundant number, since it is smaller than the sum of its proper divisors (2107400123164).

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

1264440073764 is a wasteful number, since it uses less digits than its factorization.

1264440073764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15052858035 (or 15052858033 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 48.

The spelling of 1264440073764 in words is "one trillion, two hundred sixty-four billion, four hundred forty million, seventy-three thousand, seven hundred sixty-four".