780609466396634 has 48 divisors (see below), whose sum is σ = 1369739163434400. Its totient is φ = 332666790646176.

The previous prime is 780609466396631. The next prime is 780609466396759. The reversal of 780609466396634 is 436693664906087.

It is a super-2 number, since 2×780609466396634² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (780609466396631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533756957 + ... + 535217439.

It is an arithmetic number, because the mean of its divisors is an integer number (28536232571550).

Almost surely, 2^{780609466396634} is an apocalyptic number.

780609466396634 is a deficient number, since it is larger than the sum of its proper divisors (589129697037766).

780609466396634 is a wasteful number, since it uses less digits than its factorization.

780609466396634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491147 (or 1491140 counting only the distinct ones).

The product of its (nonzero) digits is 5079158784, while the sum is 77.

The spelling of 780609466396634 in words is "seven hundred eighty trillion, six hundred nine billion, four hundred sixty-six million, three hundred ninety-six thousand, six hundred thirty-four".