137445179381 has 2 divisors, whose sum is σ = 137445179382. Its totient is φ = 137445179380.

The previous prime is 137445179369. The next prime is 137445179413. The reversal of 137445179381 is 183971544731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135136376881 + 2308802500 = 367609^2 + 48050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137445179381 is a prime.

It is a super-2 number, since 2×137445179381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137445179341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68722589690 + 68722589691.

It is an arithmetic number, because the mean of its divisors is an integer number (68722589691).

Almost surely, 2^137445179381 is an apocalyptic number.

It is an amenable number.

137445179381 is a deficient number, since it is larger than the sum of its proper divisors (1).

137445179381 is an equidigital number, since it uses as much as digits as its factorization.

137445179381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The spelling of 137445179381 in words is "one hundred thirty-seven billion, four hundred forty-five million, one hundred seventy-nine thousand, three hundred eighty-one".