67436863476 has 72 divisors (see below), whose sum is σ = 166201892640. Its totient is φ = 21278977344.

The previous prime is 67436863441. The next prime is 67436863547.

It is a happy number.

67436863476 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 6176310 + ... + 6187218.

It is an arithmetic number, because the mean of its divisors is an integer number (2308359620).

Almost surely, 2^67436863476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67436863476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83100946320).

67436863476 is an abundant number, since it is smaller than the sum of its proper divisors (98765029164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67436863476 is a wasteful number, since it uses less digits than its factorization.

67436863476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12381 (or 12360 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 60.

The spelling of 67436863476 in words is "sixty-seven billion, four hundred thirty-six million, eight hundred sixty-three thousand, four hundred seventy-six".