137620240865 has 8 divisors (see below), whose sum is σ = 165147138240. Its totient is φ = 110094293232.

The previous prime is 137620240861. The next prime is 137620240871. The reversal of 137620240865 is 568042026731.

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

It is a cyclic number.

It is not a de Polignac number, because 137620240865 - 2² = 137620240861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137620240861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134252 + ... + 541538.

It is an arithmetic number, because the mean of its divisors is an integer number (20643392280).

Almost surely, 2^137620240865 is an apocalyptic number.

It is an amenable number.

137620240865 is a deficient number, since it is larger than the sum of its proper divisors (27526897375).

137620240865 is an equidigital number, since it uses as much as digits as its factorization.

137620240865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474871.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 137620240865 in words is "one hundred thirty-seven billion, six hundred twenty million, two hundred forty thousand, eight hundred sixty-five".