26721642348 has 18 divisors (see below), whose sum is σ = 67546373804. Its totient is φ = 8907214104.

The previous prime is 26721642341. The next prime is 26721642373. The reversal of 26721642348 is 84324612762.

It is a happy number.

26721642348 is a `hidden beast` number, since 2 + 6 + 7 + 216 + 423 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (26721642341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371133886 + ... + 371133957.

Almost surely, 2^26721642348 is an apocalyptic number.

It is an amenable number.

26721642348 is an abundant number, since it is smaller than the sum of its proper divisors (40824731456).

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

26721642348 is a wasteful number, since it uses less digits than its factorization.

26721642348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742267853 (or 742267848 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The spelling of 26721642348 in words is "twenty-six billion, seven hundred twenty-one million, six hundred forty-two thousand, three hundred forty-eight".