137066660646 has 32 divisors (see below), whose sum is σ = 283643562240. Its totient is φ = 44104484256.

The previous prime is 137066660641. The next prime is 137066660669. The reversal of 137066660646 is 646066660731.

It is a happy number.

137066660646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137066660641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811495 + ... + 965741.

It is an arithmetic number, because the mean of its divisors is an integer number (8863861320).

Almost surely, 2^137066660646 is an apocalyptic number.

137066660646 is an abundant number, since it is smaller than the sum of its proper divisors (146576901594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137066660646 is a wasteful number, since it uses less digits than its factorization.

137066660646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159388.

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 137066660646 in words is "one hundred thirty-seven billion, sixty-six million, six hundred sixty thousand, six hundred forty-six".