68273369515 has 24 divisors (see below), whose sum is σ = 88736934240. Its totient is φ = 50404783104.

The previous prime is 68273369491. The next prime is 68273369551. The reversal of 68273369515 is 51596337286.

It is a de Polignac number, because none of the positive numbers 2^k-68273369515 is a prime.

It is a super-2 number, since 2×68273369515² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4744251 + ... + 4758619.

It is an arithmetic number, because the mean of its divisors is an integer number (3697372260).

Almost surely, 2^68273369515 is an apocalyptic number.

68273369515 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68273369515 is a deficient number, since it is larger than the sum of its proper divisors (20463564725).

68273369515 is a wasteful number, since it uses less digits than its factorization.

68273369515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20023 (or 20010 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 55.

The spelling of 68273369515 in words is "sixty-eight billion, two hundred seventy-three million, three hundred sixty-nine thousand, five hundred fifteen".