137782758481 has 3 divisors (see below), whose sum is σ = 137783129673. Its totient is φ = 137782387290.

The previous prime is 137782758433. The next prime is 137782758523. The reversal of 137782758481 is 184857287731.

The square root of 137782758481 is 371191.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 137782758481 - 2⁹ = 137782757969 is a prime.

It is a super-2 number, since 2×137782758481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137782758781) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 185596 + ... + 556786.

It is an arithmetic number, because the mean of its divisors is an integer number (45927709891).

Almost surely, 2^137782758481 is an apocalyptic number.

137782758481 is the 371191-st square number.

137782758481 is the 185596-th centered octagonal number.

It is an amenable number.

137782758481 is a deficient number, since it is larger than the sum of its proper divisors (371192).

137782758481 is an frugal number, since it uses more digits than its factorization.

137782758481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742382 (or 371191 counting only the distinct ones).

The product of its digits is 21073920, while the sum is 61.

The spelling of 137782758481 in words is "one hundred thirty-seven billion, seven hundred eighty-two million, seven hundred fifty-eight thousand, four hundred eighty-one".