65949018699 has 8 divisors (see below), whose sum is σ = 87946819792. Its totient is φ = 43958615040.

The previous prime is 65949018689. The next prime is 65949018703. The reversal of 65949018699 is 99681094956.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65949018699 - 2²⁴ = 65932241483 is a prime.

It is a super-2 number, since 2×65949018699² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65949018679) 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, 1828522 + ... + 1864239.

It is an arithmetic number, because the mean of its divisors is an integer number (10993352474).

Almost surely, 2^65949018699 is an apocalyptic number.

65949018699 is a deficient number, since it is larger than the sum of its proper divisors (21997801093).

65949018699 is a wasteful number, since it uses less digits than its factorization.

65949018699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698717.

The product of its (nonzero) digits is 37791360, while the sum is 66.

The spelling of 65949018699 in words is "sixty-five billion, nine hundred forty-nine million, eighteen thousand, six hundred ninety-nine".