137045046661 has 4 divisors (see below), whose sum is σ = 145106520012. Its totient is φ = 128983573312.

The previous prime is 137045046653. The next prime is 137045046683. The reversal of 137045046661 is 166640540731.

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 87891496225 + 49153550436 = 296465^2 + 221706^2 .

It is a cyclic number.

It is not a de Polignac number, because 137045046661 - 2³ = 137045046653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137045046361) 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, 4030736650 + ... + 4030736683.

It is an arithmetic number, because the mean of its divisors is an integer number (36276630003).

Almost surely, 2^137045046661 is an apocalyptic number.

It is an amenable number.

137045046661 is a deficient number, since it is larger than the sum of its proper divisors (8061473351).

137045046661 is an equidigital number, since it uses as much as digits as its factorization.

137045046661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061473350.

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

The spelling of 137045046661 in words is "one hundred thirty-seven billion, forty-five million, forty-six thousand, six hundred sixty-one".