1672700726623 has 2 divisors, whose sum is σ = 1672700726624. Its totient is φ = 1672700726622.

The previous prime is 1672700726621. The next prime is 1672700726677. The reversal of 1672700726623 is 3266270072761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1672700726623 - 2¹ = 1672700726621 is a prime.

It is a super-2 number, since 2×1672700726623² (a number of 25 digits) contains 22 as substring.

Together with 1672700726621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672700726621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836350363311 + 836350363312.

It is an arithmetic number, because the mean of its divisors is an integer number (836350363312).

Almost surely, 2^{1672700726623} is an apocalyptic number.

1672700726623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672700726623 is an equidigital number, since it uses as much as digits as its factorization.

1672700726623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 1672700726623 in words is "one trillion, six hundred seventy-two billion, seven hundred million, seven hundred twenty-six thousand, six hundred twenty-three".