1264704340328 has 64 divisors (see below), whose sum is σ = 2827467760320. Its totient is φ = 522725068800.

The previous prime is 1264704340309. The next prime is 1264704340351. The reversal of 1264704340328 is 8230434074621.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8173433 + ... + 8326728.

It is an arithmetic number, because the mean of its divisors is an integer number (44179183755).

Almost surely, 2^{1264704340328} is an apocalyptic number.

It is an amenable number.

1264704340328 is an abundant number, since it is smaller than the sum of its proper divisors (1562763419992).

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

1264704340328 is a wasteful number, since it uses less digits than its factorization.

1264704340328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16500258 (or 16500254 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 1264704340328 in words is "one trillion, two hundred sixty-four billion, seven hundred four million, three hundred forty thousand, three hundred twenty-eight".