68727968463 has 64 divisors (see below), whose sum is σ = 118460620800. Its totient is φ = 34392408960.

The previous prime is 68727968461. The next prime is 68727968467. The reversal of 68727968463 is 36486972786.

It is not a de Polignac number, because 68727968463 - 2¹ = 68727968461 is a prime.

It is a super-2 number, since 2×68727968463² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68727968394 and 68727968403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68727968461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2956078 + ... + 2979236.

It is an arithmetic number, because the mean of its divisors is an integer number (1850947200).

Almost surely, 2^68727968463 is an apocalyptic number.

68727968463 is a deficient number, since it is larger than the sum of its proper divisors (49732652337).

68727968463 is a wasteful number, since it uses less digits than its factorization.

68727968463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23652.

The product of its digits is 146313216, while the sum is 66.

The spelling of 68727968463 in words is "sixty-eight billion, seven hundred twenty-seven million, nine hundred sixty-eight thousand, four hundred sixty-three".