65487798475 has 54 divisors (see below), whose sum is σ = 89869773140. Its totient is φ = 47303071200.

The previous prime is 65487798469. The next prime is 65487798479. The reversal of 65487798475 is 57489778456.

65487798475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65487798475 - 2¹¹ = 65487796427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65487798479) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 172790836 + ... + 172791214.

Almost surely, 2^65487798475 is an apocalyptic number.

65487798475 is a deficient number, since it is larger than the sum of its proper divisors (24381974665).

65487798475 is a wasteful number, since it uses less digits than its factorization.

65487798475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 634 counting only the distinct ones).

The product of its digits is 474163200, while the sum is 70.

The spelling of 65487798475 in words is "sixty-five billion, four hundred eighty-seven million, seven hundred ninety-eight thousand, four hundred seventy-five".