26556615030 has 128 divisors (see below), whose sum is σ = 70572902400. Its totient is φ = 6342105600.

The previous prime is 26556614999. The next prime is 26556615101. The reversal of 26556615030 is 3051665562.

It is a self number, because there is not a number n which added to its sum of digits gives 26556615030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6508531 + ... + 6512609.

It is an arithmetic number, because the mean of its divisors is an integer number (551350800).

Almost surely, 2^26556615030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26556615030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35286451200).

26556615030 is an abundant number, since it is smaller than the sum of its proper divisors (44016287370).

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

26556615030 is a wasteful number, since it uses less digits than its factorization.

26556615030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 26556615030 in words is "twenty-six billion, five hundred fifty-six million, six hundred fifteen thousand, thirty".