14891478061 has 2 divisors, whose sum is σ = 14891478062. Its totient is φ = 14891478060.

The previous prime is 14891478031. The next prime is 14891478067. The reversal of 14891478061 is 16087419841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12843915561 + 2047562500 = 113331^2 + 45250^2 .

It is a cyclic number.

It is not a de Polignac number, because 14891478061 - 2⁷ = 14891477933 is a prime.

It is a super-2 number, since 2×14891478061² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14891477996 and 14891478014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14891478067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7445739030 + 7445739031.

It is an arithmetic number, because the mean of its divisors is an integer number (7445739031).

Almost surely, 2^14891478061 is an apocalyptic number.

It is an amenable number.

14891478061 is a deficient number, since it is larger than the sum of its proper divisors (1).

14891478061 is an equidigital number, since it uses as much as digits as its factorization.

14891478061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 49.

The spelling of 14891478061 in words is "fourteen billion, eight hundred ninety-one million, four hundred seventy-eight thousand, sixty-one".