65419668532 has 24 divisors (see below), whose sum is σ = 121227986880. Its totient is φ = 30783392640.

The previous prime is 65419668487. The next prime is 65419668533. The reversal of 65419668532 is 23586691456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65419668533) 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 7 ways as a sum of consecutive naturals, for example, 1147969 + ... + 1203607.

It is an arithmetic number, because the mean of its divisors is an integer number (5051166120).

Almost surely, 2^65419668532 is an apocalyptic number.

It is an amenable number.

65419668532 is a deficient number, since it is larger than the sum of its proper divisors (55808318348).

65419668532 is a wasteful number, since it uses less digits than its factorization.

65419668532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72951 (or 72949 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 55.

The spelling of 65419668532 in words is "sixty-five billion, four hundred nineteen million, six hundred sixty-eight thousand, five hundred thirty-two".