673740733401 has 12 divisors (see below), whose sum is σ = 975632402212. Its totient is φ = 448029099936.

The previous prime is 673740733363. The next prime is 673740733409. The reversal of 673740733401 is 104337047376.

It can be written as a sum of positive squares in 2 ways, for example, as 474714110025 + 199026623376 = 688995^2 + 446124^2 .

It is not a de Polignac number, because 673740733401 - 2⁷ = 673740733273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673740733409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94278646 + ... + 94285791.

Almost surely, 2^673740733401 is an apocalyptic number.

It is an amenable number.

673740733401 is a deficient number, since it is larger than the sum of its proper divisors (301891668811).

673740733401 is a wasteful number, since it uses less digits than its factorization.

673740733401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188564840 (or 188564837 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 45.

The spelling of 673740733401 in words is "six hundred seventy-three billion, seven hundred forty million, seven hundred thirty-three thousand, four hundred one".