26264543550 has 96 divisors (see below), whose sum is σ = 78820169472. Its totient is φ = 5650183680.

The previous prime is 26264543537. The next prime is 26264543551. The reversal of 26264543550 is 5534546262.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26264543551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 717852 + ... + 753551.

It is an arithmetic number, because the mean of its divisors is an integer number (821043432).

Almost surely, 2^26264543550 is an apocalyptic number.

26264543550 is an abundant number, since it is smaller than the sum of its proper divisors (52555625922).

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

26264543550 is a wasteful number, since it uses less digits than its factorization.

26264543550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471442 (or 1471437 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 26264543550 in words is "twenty-six billion, two hundred sixty-four million, five hundred forty-three thousand, five hundred fifty".