309695421848 has 16 divisors (see below), whose sum is σ = 580891581960. Its totient is φ = 154791000000.

The previous prime is 309695421823. The next prime is 309695421887. The reversal of 309695421848 is 848124596903.

It is a happy number.

It is a super-2 number, since 2×309695421848² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7065653 + ... + 7109348.

Almost surely, 2^309695421848 is an apocalyptic number.

It is an amenable number.

309695421848 is a deficient number, since it is larger than the sum of its proper divisors (271196160112).

309695421848 is a wasteful number, since it uses less digits than its factorization.

309695421848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14177738 (or 14177734 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 309695421848 in words is "three hundred nine billion, six hundred ninety-five million, four hundred twenty-one thousand, eight hundred forty-eight".