26430763573 has 2 divisors, whose sum is σ = 26430763574. Its totient is φ = 26430763572.

The previous prime is 26430763553. The next prime is 26430763577. The reversal of 26430763573 is 37536703462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21720274884 + 4710488689 = 147378^2 + 68633^2 .

It is a cyclic number.

It is not a de Polignac number, because 26430763573 - 2²¹ = 26428666421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26430763577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13215381786 + 13215381787.

It is an arithmetic number, because the mean of its divisors is an integer number (13215381787).

Almost surely, 2^26430763573 is an apocalyptic number.

It is an amenable number.

26430763573 is a deficient number, since it is larger than the sum of its proper divisors (1).

26430763573 is an equidigital number, since it uses as much as digits as its factorization.

26430763573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 46.

The spelling of 26430763573 in words is "twenty-six billion, four hundred thirty million, seven hundred sixty-three thousand, five hundred seventy-three".