26620628958 has 108 divisors (see below), whose sum is σ = 73749180960. Its totient is φ = 6914421360.

The previous prime is 26620628929. The next prime is 26620628963. The reversal of 26620628958 is 85982602662.

26620628958 is a `hidden beast` number, since 2 + 6 + 6 + 2 + 0 + 628 + 9 + 5 + 8 = 666.

It is a super-2 number, since 2×26620628958² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 17998 + ... + 231441.

Almost surely, 2^26620628958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26620628958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36874590480).

26620628958 is an abundant number, since it is smaller than the sum of its proper divisors (47128552002).

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

26620628958 is a wasteful number, since it uses less digits than its factorization.

26620628958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249483 (or 249462 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 26620628958 in words is "twenty-six billion, six hundred twenty million, six hundred twenty-eight thousand, nine hundred fifty-eight".