26660285394 has 32 divisors (see below), whose sum is σ = 58403877120. Its totient is φ = 8075596032.

The previous prime is 26660285381. The next prime is 26660285429. The reversal of 26660285394 is 49358206662.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4503514 + ... + 4509429.

It is an arithmetic number, because the mean of its divisors is an integer number (1825121160).

Almost surely, 2^26660285394 is an apocalyptic number.

26660285394 is an abundant number, since it is smaller than the sum of its proper divisors (31743591726).

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

26660285394 is a wasteful number, since it uses less digits than its factorization.

26660285394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9012994.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 26660285394 in words is "twenty-six billion, six hundred sixty million, two hundred eighty-five thousand, three hundred ninety-four".