26552221920 has 216 divisors, whose sum is σ = 105403118184. Its totient is φ = 6069063168.

The previous prime is 26552221909. The next prime is 26552221931. The reversal of 26552221920 is 2912225562.

It is a happy number.

26552221920 is a `hidden beast` number, since 26 + 5 + 522 + 21 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26552221909) and next prime (26552221931).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 117594 + ... + 258713.

It is an arithmetic number, because the mean of its divisors is an integer number (487977399).

Almost surely, 2^26552221920 is an apocalyptic number.

26552221920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26552221920 is an abundant number, since it is smaller than the sum of its proper divisors (78850896264).

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

26552221920 is a wasteful number, since it uses less digits than its factorization.

26552221920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376342 (or 376324 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 26552221920 in words is "twenty-six billion, five hundred fifty-two million, two hundred twenty-one thousand, nine hundred twenty".