68622599780 has 36 divisors (see below), whose sum is σ = 167635210428. Its totient is φ = 23527748160.

The previous prime is 68622599767. The next prime is 68622599797. The reversal of 68622599780 is 8799522686.

It can be written as a sum of positive squares in 2 ways, for example, as 19990000996 + 48632598784 = 141386^2 + 220528^2 .

It is a super-2 number, since 2×68622599780² (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 11 ways as a sum of consecutive naturals, for example, 35010551 + ... + 35012510.

It is an arithmetic number, because the mean of its divisors is an integer number (4656533623).

Almost surely, 2^68622599780 is an apocalyptic number.

It is an amenable number.

68622599780 is an abundant number, since it is smaller than the sum of its proper divisors (99012610648).

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

68622599780 is a wasteful number, since it uses less digits than its factorization.

68622599780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70023084 (or 70023075 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 68622599780 in words is "sixty-eight billion, six hundred twenty-two million, five hundred ninety-nine thousand, seven hundred eighty".