1623144540749 has 2 divisors, whose sum is σ = 1623144540750. Its totient is φ = 1623144540748.

The previous prime is 1623144540697. The next prime is 1623144540757. The reversal of 1623144540749 is 9470454413261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184218415524 + 438926125225 = 1088218^2 + 662515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623144540749 - 2¹⁶ = 1623144475213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1623144540697 and 1623144540706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623144540649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811572270374 + 811572270375.

It is an arithmetic number, because the mean of its divisors is an integer number (811572270375).

Almost surely, 2^{1623144540749} is an apocalyptic number.

It is an amenable number.

1623144540749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623144540749 is an equidigital number, since it uses as much as digits as its factorization.

1623144540749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 1623144540749 in words is "one trillion, six hundred twenty-three billion, one hundred forty-four million, five hundred forty thousand, seven hundred forty-nine".