65691554475 has 12 divisors (see below), whose sum is σ = 108610036856. Its totient is φ = 35035495680.

The previous prime is 65691554473. The next prime is 65691554483. The reversal of 65691554475 is 57445519656.

It is not a de Polignac number, because 65691554475 - 2¹ = 65691554473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65691554473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437943622 + ... + 437943771.

Almost surely, 2^65691554475 is an apocalyptic number.

65691554475 is a deficient number, since it is larger than the sum of its proper divisors (42918482381).

65691554475 is a wasteful number, since it uses less digits than its factorization.

65691554475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875887406 (or 875887401 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 57.

The spelling of 65691554475 in words is "sixty-five billion, six hundred ninety-one million, five hundred fifty-four thousand, four hundred seventy-five".