14220461557 has 2 divisors, whose sum is σ = 14220461558. Its totient is φ = 14220461556.

The previous prime is 14220461537. The next prime is 14220461569. The reversal of 14220461557 is 75516402241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13287403441 + 933058116 = 115271^2 + 30546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14220461557 is a prime.

It is a super-2 number, since 2×14220461557² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14220461527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7110230778 + 7110230779.

It is an arithmetic number, because the mean of its divisors is an integer number (7110230779).

Almost surely, 2^14220461557 is an apocalyptic number.

It is an amenable number.

14220461557 is a deficient number, since it is larger than the sum of its proper divisors (1).

14220461557 is an equidigital number, since it uses as much as digits as its factorization.

14220461557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

Adding to 14220461557 its reverse (75516402241), we get a palindrome (89736863798).

The spelling of 14220461557 in words is "fourteen billion, two hundred twenty million, four hundred sixty-one thousand, five hundred fifty-seven".