137581057805 has 8 divisors (see below), whose sum is σ = 166558307832. Its totient is φ = 109090820608.

The previous prime is 137581057781. The next prime is 137581057811. The reversal of 137581057805 is 508750185731.

It can be written as a sum of positive squares in 4 ways, for example, as 15481829476 + 122099228329 = 124426^2 + 349427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137581057805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121752584 + ... + 121753713.

It is an arithmetic number, because the mean of its divisors is an integer number (20819788479).

Almost surely, 2^137581057805 is an apocalyptic number.

It is an amenable number.

137581057805 is a deficient number, since it is larger than the sum of its proper divisors (28977250027).

137581057805 is a wasteful number, since it uses less digits than its factorization.

137581057805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243506415.

The product of its (nonzero) digits is 1176000, while the sum is 50.

The spelling of 137581057805 in words is "one hundred thirty-seven billion, five hundred eighty-one million, fifty-seven thousand, eight hundred five".