27401662711 has 4 divisors (see below), whose sum is σ = 27543640432. Its totient is φ = 27259684992.

The previous prime is 27401662703. The next prime is 27401662727. The reversal of 27401662711 is 11726610472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27401662711 - 2³ = 27401662703 is a prime.

It is a super-2 number, since 2×27401662711² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27401662741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70988571 + ... + 70988956.

It is an arithmetic number, because the mean of its divisors is an integer number (6885910108).

Almost surely, 2^27401662711 is an apocalyptic number.

27401662711 is a deficient number, since it is larger than the sum of its proper divisors (141977721).

27401662711 is a wasteful number, since it uses less digits than its factorization.

27401662711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141977720.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 27401662711 in words is "twenty-seven billion, four hundred one million, six hundred sixty-two thousand, seven hundred eleven".