673135762427440 has 40 divisors (see below), whose sum is σ = 1685428389772848. Its totient is φ = 248542435357440.

The previous prime is 673135762427417. The next prime is 673135762427503. The reversal of 673135762427440 is 44724267531376.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×673135762427440² (a number of 30 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

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, 323622961666 + ... + 323622963745.

Almost surely, 2^{673135762427440} is an apocalyptic number.

It is an amenable number.

673135762427440 is an abundant number, since it is smaller than the sum of its proper divisors (1012292627345408).

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

673135762427440 is a wasteful number, since it uses less digits than its factorization.

673135762427440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647245925437 (or 647245925431 counting only the distinct ones).

The product of its (nonzero) digits is 142248960, while the sum is 61.

The spelling of 673135762427440 in words is "six hundred seventy-three trillion, one hundred thirty-five billion, seven hundred sixty-two million, four hundred twenty-seven thousand, four hundred forty".