27405946645 has 64 divisors (see below), whose sum is σ = 42440785920. Its totient is φ = 16487827200.

The previous prime is 27405946637. The next prime is 27405946669. The reversal of 27405946645 is 54664950472.

It is not a de Polignac number, because 27405946645 - 2³ = 27405946637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27405946592 and 27405946601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4639764 + ... + 4645666.

It is an arithmetic number, because the mean of its divisors is an integer number (663137280).

Almost surely, 2^27405946645 is an apocalyptic number.

It is an amenable number.

27405946645 is a deficient number, since it is larger than the sum of its proper divisors (15034839275).

27405946645 is a wasteful number, since it uses less digits than its factorization.

27405946645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 27405946645 in words is "twenty-seven billion, four hundred five million, nine hundred forty-six thousand, six hundred forty-five".