139737523447 has 2 divisors, whose sum is σ = 139737523448. Its totient is φ = 139737523446.

The previous prime is 139737523411. The next prime is 139737523463. The reversal of 139737523447 is 744325737931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139737523447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139737523487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69868761723 + 69868761724.

It is an arithmetic number, because the mean of its divisors is an integer number (69868761724).

Almost surely, 2^139737523447 is an apocalyptic number.

139737523447 is a deficient number, since it is larger than the sum of its proper divisors (1).

139737523447 is an equidigital number, since it uses as much as digits as its factorization.

139737523447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13335840, while the sum is 55.

The spelling of 139737523447 in words is "one hundred thirty-nine billion, seven hundred thirty-seven million, five hundred twenty-three thousand, four hundred forty-seven".