26100640542 has 16 divisors (see below), whose sum is σ = 53086049280. Its totient is φ = 8552752152.

The previous prime is 26100640541. The next prime is 26100640633. The reversal of 26100640542 is 24504600162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26100640541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36864958 + ... + 36865665.

It is an arithmetic number, because the mean of its divisors is an integer number (3317878080).

Almost surely, 2^26100640542 is an apocalyptic number.

26100640542 is an abundant number, since it is smaller than the sum of its proper divisors (26985408738).

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

26100640542 is a wasteful number, since it uses less digits than its factorization.

26100640542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73730687.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 26100640542 in words is "twenty-six billion, one hundred million, six hundred forty thousand, five hundred forty-two".