137442819947 has 2 divisors, whose sum is σ = 137442819948. Its totient is φ = 137442819946.

The previous prime is 137442819931. The next prime is 137442820049. The reversal of 137442819947 is 749918244731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137442819947 - 2⁴ = 137442819931 is a prime.

It is a super-2 number, since 2×137442819947² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137442819847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68721409973 + 68721409974.

It is an arithmetic number, because the mean of its divisors is an integer number (68721409974).

Almost surely, 2^137442819947 is an apocalyptic number.

137442819947 is a deficient number, since it is larger than the sum of its proper divisors (1).

137442819947 is an equidigital number, since it uses as much as digits as its factorization.

137442819947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 59.

The spelling of 137442819947 in words is "one hundred thirty-seven billion, four hundred forty-two million, eight hundred nineteen thousand, nine hundred forty-seven".