214784513661 has 32 divisors (see below), whose sum is σ = 294331383808. Its totient is φ = 139273525440.

The previous prime is 214784513659. The next prime is 214784513681. The reversal of 214784513661 is 166315487412.

It is not a de Polignac number, because 214784513661 - 2¹ = 214784513659 is a prime.

It is a super-2 number, since 2×214784513661² (a number of 23 digits) contains 22 as substring.

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 214784513661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214784513681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7119936 + ... + 7150038.

It is an arithmetic number, because the mean of its divisors is an integer number (9197855744).

Almost surely, 2^214784513661 is an apocalyptic number.

It is an amenable number.

214784513661 is a deficient number, since it is larger than the sum of its proper divisors (79546870147).

214784513661 is a wasteful number, since it uses less digits than its factorization.

214784513661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30601.

The product of its digits is 967680, while the sum is 48.

The spelling of 214784513661 in words is "two hundred fourteen billion, seven hundred eighty-four million, five hundred thirteen thousand, six hundred sixty-one".