635781464012 has 24 divisors (see below), whose sum is σ = 1123426624320. Its totient is φ = 314805553920.

The previous prime is 635781463991. The next prime is 635781464029. The reversal of 635781464012 is 210464187536.

635781464012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×635781464012² (a number of 24 digits) contains 22 as substring.

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, 426068 + ... + 1205444.

It is an arithmetic number, because the mean of its divisors is an integer number (46809442680).

Almost surely, 2^635781464012 is an apocalyptic number.

It is an amenable number.

635781464012 is a deficient number, since it is larger than the sum of its proper divisors (487645160308).

635781464012 is a wasteful number, since it uses less digits than its factorization.

635781464012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781361 (or 781359 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 635781464012 in words is "six hundred thirty-five billion, seven hundred eighty-one million, four hundred sixty-four thousand, twelve".