214495697691 has 54 divisors (see below), whose sum is σ = 342488418948. Its totient is φ = 128290979520.

The previous prime is 214495697681. The next prime is 214495697707. The reversal of 214495697691 is 196796594412.

214495697691 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 9 + 569 + 7 + 69 + 1 = 666.

It is not a de Polignac number, because 214495697691 - 2²³ = 214487309083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214495697651) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 410125356 + ... + 410125878.

Almost surely, 2^214495697691 is an apocalyptic number.

214495697691 is a deficient number, since it is larger than the sum of its proper divisors (127992721257).

214495697691 is an frugal number, since it uses more digits than its factorization.

214495697691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 626 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 214495697691 in words is "two hundred fourteen billion, four hundred ninety-five million, six hundred ninety-seven thousand, six hundred ninety-one".