68820604281 has 48 divisors (see below), whose sum is σ = 118193729472. Its totient is φ = 38037110400.

The previous prime is 68820604271. The next prime is 68820604343. The reversal of 68820604281 is 18240602886.

It is not a de Polignac number, because 68820604281 - 2⁶ = 68820604217 is a prime.

It is a super-2 number, since 2×68820604281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68820604271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215310 + ... + 428951.

It is an arithmetic number, because the mean of its divisors is an integer number (2462369364).

Almost surely, 2^68820604281 is an apocalyptic number.

It is an amenable number.

68820604281 is a deficient number, since it is larger than the sum of its proper divisors (49373125191).

68820604281 is a wasteful number, since it uses less digits than its factorization.

68820604281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644374 (or 644371 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 68820604281 in words is "sixty-eight billion, eight hundred twenty million, six hundred four thousand, two hundred eighty-one".