139933265491 has 2 divisors, whose sum is σ = 139933265492. Its totient is φ = 139933265490.

The previous prime is 139933265453. The next prime is 139933265519. The reversal of 139933265491 is 194562339931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139933265491 - 2⁷ = 139933265363 is a prime.

It is not a weakly prime, because it can be changed into another prime (139933265411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69966632745 + 69966632746.

It is an arithmetic number, because the mean of its divisors is an integer number (69966632746).

Almost surely, 2^139933265491 is an apocalyptic number.

139933265491 is a deficient number, since it is larger than the sum of its proper divisors (1).

139933265491 is an equidigital number, since it uses as much as digits as its factorization.

139933265491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4723920, while the sum is 55.

The spelling of 139933265491 in words is "one hundred thirty-nine billion, nine hundred thirty-three million, two hundred sixty-five thousand, four hundred ninety-one".