27461312691 has 16 divisors (see below), whose sum is σ = 38211554304. Its totient is φ = 17509494464.

The previous prime is 27461312689. The next prime is 27461312699. The reversal of 27461312691 is 19621316472.

It is not a de Polignac number, because 27461312691 - 2¹ = 27461312689 is a prime.

It is a super-2 number, since 2×27461312691² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27461312699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747055 + ... + 782951.

It is an arithmetic number, because the mean of its divisors is an integer number (2388222144).

Almost surely, 2^27461312691 is an apocalyptic number.

27461312691 is a deficient number, since it is larger than the sum of its proper divisors (10750241613).

27461312691 is a wasteful number, since it uses less digits than its factorization.

27461312691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47010.

The product of its digits is 108864, while the sum is 42.

The spelling of 27461312691 in words is "twenty-seven billion, four hundred sixty-one million, three hundred twelve thousand, six hundred ninety-one".