71978976403 has 2 divisors, whose sum is σ = 71978976404. Its totient is φ = 71978976402.

The previous prime is 71978976373. The next prime is 71978976449. The reversal of 71978976403 is 30467987917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71978976403 - 2²⁵ = 71945421971 is a prime.

It is not a weakly prime, because it can be changed into another prime (71978976203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35989488201 + 35989488202.

It is an arithmetic number, because the mean of its divisors is an integer number (35989488202).

Almost surely, 2^71978976403 is an apocalyptic number.

71978976403 is a deficient number, since it is larger than the sum of its proper divisors (1).

71978976403 is an equidigital number, since it uses as much as digits as its factorization.

71978976403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16003008, while the sum is 61.

The spelling of 71978976403 in words is "seventy-one billion, nine hundred seventy-eight million, nine hundred seventy-six thousand, four hundred three".