137043236851 has 4 divisors (see below), whose sum is σ = 137431461672. Its totient is φ = 136655012032.

The previous prime is 137043236839. The next prime is 137043236867. The reversal of 137043236851 is 158632340731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158632340731 = 479 ⋅331173989.

It is a cyclic number.

It is not a de Polignac number, because 137043236851 - 2⁷ = 137043236723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137043236798 and 137043236807.

It is not an unprimeable number, because it can be changed into a prime (137043236881) 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, 194111881 + ... + 194112586.

It is an arithmetic number, because the mean of its divisors is an integer number (34357865418).

Almost surely, 2^137043236851 is an apocalyptic number.

137043236851 is a deficient number, since it is larger than the sum of its proper divisors (388224821).

137043236851 is an equidigital number, since it uses as much as digits as its factorization.

137043236851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388224820.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 137043236851 in words is "one hundred thirty-seven billion, forty-three million, two hundred thirty-six thousand, eight hundred fifty-one".