60691921765 has 8 divisors (see below), whose sum is σ = 77114441880. Its totient is φ = 45697446912.

The previous prime is 60691921721. The next prime is 60691921831. The reversal of 60691921765 is 56712919606.

It can be written as a sum of positive squares in 4 ways, for example, as 8617594561 + 52074327204 = 92831^2 + 228198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 60691921765 - 2⁷ = 60691921637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357011220 + ... + 357011389.

It is an arithmetic number, because the mean of its divisors is an integer number (9639305235).

Almost surely, 2^60691921765 is an apocalyptic number.

It is an amenable number.

60691921765 is a deficient number, since it is larger than the sum of its proper divisors (16422520115).

60691921765 is a wasteful number, since it uses less digits than its factorization.

60691921765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714022631.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 60691921765 in words is "sixty billion, six hundred ninety-one million, nine hundred twenty-one thousand, seven hundred sixty-five".