43742695253 has 2 divisors, whose sum is σ = 43742695254. Its totient is φ = 43742695252.

The previous prime is 43742695247. The next prime is 43742695267. The reversal of 43742695253 is 35259624734.

43742695253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29344375204 + 14398320049 = 171302^2 + 119993^2 .

It is a cyclic number.

It is not a de Polignac number, because 43742695253 - 2¹⁸ = 43742433109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43742695273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21871347626 + 21871347627.

It is an arithmetic number, because the mean of its divisors is an integer number (21871347627).

Almost surely, 2^43742695253 is an apocalyptic number.

It is an amenable number.

43742695253 is a deficient number, since it is larger than the sum of its proper divisors (1).

43742695253 is an equidigital number, since it uses as much as digits as its factorization.

43742695253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 50.

The spelling of 43742695253 in words is "forty-three billion, seven hundred forty-two million, six hundred ninety-five thousand, two hundred fifty-three".