249461321437 has 2 divisors, whose sum is σ = 249461321438. Its totient is φ = 249461321436.

The previous prime is 249461321423. The next prime is 249461321471. The reversal of 249461321437 is 734123164942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192364696836 + 57096624601 = 438594^2 + 238949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249461321437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249461331437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124730660718 + 124730660719.

It is an arithmetic number, because the mean of its divisors is an integer number (124730660719).

Almost surely, 2^249461321437 is an apocalyptic number.

It is an amenable number.

249461321437 is a deficient number, since it is larger than the sum of its proper divisors (1).

249461321437 is an equidigital number, since it uses as much as digits as its factorization.

249461321437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The spelling of 249461321437 in words is "two hundred forty-nine billion, four hundred sixty-one million, three hundred twenty-one thousand, four hundred thirty-seven".