67220877990 has 64 divisors (see below), whose sum is σ = 190735119360. Its totient is φ = 14834951040.

The previous prime is 67220877979. The next prime is 67220878061. The reversal of 67220877990 is 9977802276.

It is a self number, because there is not a number n which added to its sum of digits gives 67220877990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5512866 + ... + 5525045.

It is an arithmetic number, because the mean of its divisors is an integer number (2980236240).

Almost surely, 2^67220877990 is an apocalyptic number.

67220877990 is an abundant number, since it is smaller than the sum of its proper divisors (123514241370).

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

67220877990 is a wasteful number, since it uses less digits than its factorization.

67220877990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11037957.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 67220877990 in words is "sixty-seven billion, two hundred twenty million, eight hundred seventy-seven thousand, nine hundred ninety".