66472098431 has 2 divisors, whose sum is σ = 66472098432. Its totient is φ = 66472098430.

The previous prime is 66472098421. The next prime is 66472098493. The reversal of 66472098431 is 13489027466.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66472098431 is a prime.

It is a super-2 number, since 2×66472098431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66472098431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66472098401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33236049215 + 33236049216.

It is an arithmetic number, because the mean of its divisors is an integer number (33236049216).

Almost surely, 2^66472098431 is an apocalyptic number.

66472098431 is a deficient number, since it is larger than the sum of its proper divisors (1).

66472098431 is an equidigital number, since it uses as much as digits as its factorization.

66472098431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 66472098431 in words is "sixty-six billion, four hundred seventy-two million, ninety-eight thousand, four hundred thirty-one".