15779042453 has 2 divisors, whose sum is σ = 15779042454. Its totient is φ = 15779042452.

The previous prime is 15779042401. The next prime is 15779042467. The reversal of 15779042453 is 35424097751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13215341764 + 2563700689 = 114958^2 + 50633^2 .

It is a cyclic number.

It is not a de Polignac number, because 15779042453 - 2¹⁸ = 15778780309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15779042398 and 15779042407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15779042753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7889521226 + 7889521227.

It is an arithmetic number, because the mean of its divisors is an integer number (7889521227).

Almost surely, 2^15779042453 is an apocalyptic number.

It is an amenable number.

15779042453 is a deficient number, since it is larger than the sum of its proper divisors (1).

15779042453 is an equidigital number, since it uses as much as digits as its factorization.

15779042453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 15779042453 in words is "fifteen billion, seven hundred seventy-nine million, forty-two thousand, four hundred fifty-three".