43145246021357 has 2 divisors, whose sum is σ = 43145246021358. Its totient is φ = 43145246021356.

The previous prime is 43145246021327. The next prime is 43145246021399. The reversal of 43145246021357 is 75312064254134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38844043785001 + 4301202236356 = 6232499^2 + 2073934^2 .

It is a cyclic number.

It is not a de Polignac number, because 43145246021357 - 2²² = 43145241827053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43145246021327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572623010678 + 21572623010679.

It is an arithmetic number, because the mean of its divisors is an integer number (21572623010679).

Almost surely, 2^{43145246021357} is an apocalyptic number.

It is an amenable number.

43145246021357 is a deficient number, since it is larger than the sum of its proper divisors (1).

43145246021357 is an equidigital number, since it uses as much as digits as its factorization.

43145246021357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 43145246021357 in words is "forty-three trillion, one hundred forty-five billion, two hundred forty-six million, twenty-one thousand, three hundred fifty-seven".