673278263001 has 20 divisors (see below), whose sum is σ = 1007962201972. Its totient is φ = 447869979648.

The previous prime is 673278262963. The next prime is 673278263003. The reversal of 673278263001 is 100362872376.

673278263001 is a `hidden beast` number, since 6 + 7 + 3 + 2 + 7 + 8 + 2 + 630 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 569836265625 + 103441997376 = 754875^2 + 321624^2 .

It is not a de Polignac number, because 673278263001 - 2¹⁴ = 673278246617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673278263003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9057160 + ... + 9131193.

Almost surely, 2^673278263001 is an apocalyptic number.

It is an amenable number.

673278263001 is a deficient number, since it is larger than the sum of its proper divisors (334683938971).

673278263001 is a wasteful number, since it uses less digits than its factorization.

673278263001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18188822 (or 18188813 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 673278263001 in words is "six hundred seventy-three billion, two hundred seventy-eight million, two hundred sixty-three thousand, one".