137815910489 has 4 divisors (see below), whose sum is σ = 137897315556. Its totient is φ = 137734505424.

The previous prime is 137815910473. The next prime is 137815910497. The reversal of 137815910489 is 984019518731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110436582400 + 27379328089 = 332320^2 + 165467^2 .

It is a cyclic number.

It is not a de Polignac number, because 137815910489 - 2⁴ = 137815910473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137815910789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40699994 + ... + 40703379.

It is an arithmetic number, because the mean of its divisors is an integer number (34474328889).

Almost surely, 2^137815910489 is an apocalyptic number.

It is an amenable number.

137815910489 is a deficient number, since it is larger than the sum of its proper divisors (81405067).

137815910489 is an equidigital number, since it uses as much as digits as its factorization.

137815910489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81405066.

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 137815910489 in words is "one hundred thirty-seven billion, eight hundred fifteen million, nine hundred ten thousand, four hundred eighty-nine".