65697590551 has 8 divisors (see below), whose sum is σ = 66750769280. Its totient is φ = 64646547768.

The previous prime is 65697590473. The next prime is 65697590573. The reversal of 65697590551 is 15509579656.

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 65697590551 - 2⁹ = 65697590039 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 (65697590351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471921 + ... + 595066.

It is an arithmetic number, because the mean of its divisors is an integer number (8343846160).

Almost surely, 2^65697590551 is an apocalyptic number.

65697590551 is a deficient number, since it is larger than the sum of its proper divisors (1053178729).

65697590551 is a wasteful number, since it uses less digits than its factorization.

65697590551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067973.

The product of its (nonzero) digits is 12757500, while the sum is 58.

The spelling of 65697590551 in words is "sixty-five billion, six hundred ninety-seven million, five hundred ninety thousand, five hundred fifty-one".