65648772892 has 6 divisors (see below), whose sum is σ = 114885352568. Its totient is φ = 32824386444.

The previous prime is 65648772853. The next prime is 65648772899. The reversal of 65648772892 is 29827784656.

It is a super-2 number, since 2×65648772892² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65648772899) 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 as a sum of consecutive naturals, namely, 8206096608 + ... + 8206096615.

Almost surely, 2^65648772892 is an apocalyptic number.

It is an amenable number.

65648772892 is a deficient number, since it is larger than the sum of its proper divisors (49236579676).

65648772892 is a wasteful number, since it uses less digits than its factorization.

65648772892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16412193227 (or 16412193225 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 64.

The spelling of 65648772892 in words is "sixty-five billion, six hundred forty-eight million, seven hundred seventy-two thousand, eight hundred ninety-two".