137209494724 has 27 divisors (see below), whose sum is σ = 242961621511. Its totient is φ = 67801310720.

The previous prime is 137209494689. The next prime is 137209494743. The reversal of 137209494724 is 427494902731.

It is a happy number.

The square root of 137209494724 is 370418.

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

137209494724 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 4 ways, for example, as 26400400324 + 110809094400 = 162482^2 + 332880^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 65933364 + ... + 65935444.

Almost surely, 2^137209494724 is an apocalyptic number.

137209494724 is the 370418-th square number.

It is an amenable number.

137209494724 is a deficient number, since it is larger than the sum of its proper divisors (105752126787).

137209494724 is an frugal number, since it uses more digits than its factorization.

137209494724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 137209494724 in words is "one hundred thirty-seven billion, two hundred nine million, four hundred ninety-four thousand, seven hundred twenty-four".