26628242064 has 20 divisors (see below), whose sum is σ = 68789625456. Its totient is φ = 8876080672.

The previous prime is 26628242051. The next prime is 26628242117. The reversal of 26628242064 is 46024282662.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277377474 + ... + 277377569.

Almost surely, 2^26628242064 is an apocalyptic number.

26628242064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26628242064 is an abundant number, since it is smaller than the sum of its proper divisors (42161383392).

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

26628242064 is a wasteful number, since it uses less digits than its factorization.

26628242064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554755054 (or 554755048 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 26628242064 in words is "twenty-six billion, six hundred twenty-eight million, two hundred forty-two thousand, sixty-four".