123446947357 has 2 divisors, whose sum is σ = 123446947358. Its totient is φ = 123446947356.

The previous prime is 123446947339. The next prime is 123446947489. The reversal of 123446947357 is 753749644321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73407941721 + 50039005636 = 270939^2 + 223694^2 .

It is a cyclic number.

It is not a de Polignac number, because 123446947357 - 2¹⁹ = 123446423069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123446947298 and 123446947307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123446941357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61723473678 + 61723473679.

It is an arithmetic number, because the mean of its divisors is an integer number (61723473679).

Almost surely, 2^123446947357 is an apocalyptic number.

It is an amenable number.

123446947357 is a deficient number, since it is larger than the sum of its proper divisors (1).

123446947357 is an equidigital number, since it uses as much as digits as its factorization.

123446947357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 55.

The spelling of 123446947357 in words is "one hundred twenty-three billion, four hundred forty-six million, nine hundred forty-seven thousand, three hundred fifty-seven".