623427101489 has 2 divisors, whose sum is σ = 623427101490. Its totient is φ = 623427101488.

The previous prime is 623427101461. The next prime is 623427101503. The reversal of 623427101489 is 984101724326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 565060407025 + 58366694464 = 751705^2 + 241592^2 .

It is a cyclic number.

It is not a de Polignac number, because 623427101489 - 2¹⁶ = 623427035953 is a prime.

It is a super-2 number, since 2×623427101489² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (623427103489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311713550744 + 311713550745.

It is an arithmetic number, because the mean of its divisors is an integer number (311713550745).

Almost surely, 2^623427101489 is an apocalyptic number.

It is an amenable number.

623427101489 is a deficient number, since it is larger than the sum of its proper divisors (1).

623427101489 is an equidigital number, since it uses as much as digits as its factorization.

623427101489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 623427101489 in words is "six hundred twenty-three billion, four hundred twenty-seven million, one hundred one thousand, four hundred eighty-nine".