71303491451 has 2 divisors, whose sum is σ = 71303491452. Its totient is φ = 71303491450.

The previous prime is 71303491397. The next prime is 71303491529. The reversal of 71303491451 is 15419430317.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71303491451 - 2⁶ = 71303491387 is a prime.

It is not a weakly prime, because it can be changed into another prime (71303491351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35651745725 + 35651745726.

It is an arithmetic number, because the mean of its divisors is an integer number (35651745726).

Almost surely, 2^71303491451 is an apocalyptic number.

71303491451 is a deficient number, since it is larger than the sum of its proper divisors (1).

71303491451 is an equidigital number, since it uses as much as digits as its factorization.

71303491451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 71303491451 in words is "seventy-one billion, three hundred three million, four hundred ninety-one thousand, four hundred fifty-one".