61738665305273 has 4 divisors (see below), whose sum is σ = 67351271242128. Its totient is φ = 56126059368420.

The previous prime is 61738665305269. The next prime is 61738665305341. The reversal of 61738665305273 is 37250356683716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61738665305273 - 2² = 61738665305269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61738665305873) 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, 2806302968411 + ... + 2806302968432.

It is an arithmetic number, because the mean of its divisors is an integer number (16837817810532).

Almost surely, 2^{61738665305273} is an apocalyptic number.

It is an amenable number.

61738665305273 is a deficient number, since it is larger than the sum of its proper divisors (5612605936855).

61738665305273 is a wasteful number, since it uses less digits than its factorization.

61738665305273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5612605936854.

The product of its (nonzero) digits is 114307200, while the sum is 62.

The spelling of 61738665305273 in words is "sixty-one trillion, seven hundred thirty-eight billion, six hundred sixty-five million, three hundred five thousand, two hundred seventy-three".