26670949645 has 8 divisors (see below), whose sum is σ = 32609010456. Its totient is φ = 20934179136.

The previous prime is 26670949631. The next prime is 26670949673. The reversal of 26670949645 is 54694907662.

It can be written as a sum of positive squares in 4 ways, for example, as 658743556 + 26012206089 = 25666^2 + 161283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-26670949645 is a prime.

It is a super-3 number, since 3×26670949645³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26670949645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50322282 + ... + 50322811.

It is an arithmetic number, because the mean of its divisors is an integer number (4076126307).

Almost surely, 2^26670949645 is an apocalyptic number.

It is an amenable number.

26670949645 is a deficient number, since it is larger than the sum of its proper divisors (5938060811).

26670949645 is a wasteful number, since it uses less digits than its factorization.

26670949645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100645151.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 26670949645 in words is "twenty-six billion, six hundred seventy million, nine hundred forty-nine thousand, six hundred forty-five".