26428666434 has 32 divisors (see below), whose sum is σ = 54599780160. Its totient is φ = 8521900992.

The previous prime is 26428666423. The next prime is 26428666457. The reversal of 26428666434 is 43466682462.

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, 305664 + ... + 382475.

It is an arithmetic number, because the mean of its divisors is an integer number (1706243130).

Almost surely, 2^26428666434 is an apocalyptic number.

26428666434 is an abundant number, since it is smaller than the sum of its proper divisors (28171113726).

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

26428666434 is a wasteful number, since it uses less digits than its factorization.

26428666434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688354.

The product of its digits is 7962624, while the sum is 51.

The spelling of 26428666434 in words is "twenty-six billion, four hundred twenty-eight million, six hundred sixty-six thousand, four hundred thirty-four".