71403627621 has 16 divisors (see below), whose sum is σ = 97280771904. Its totient is φ = 46569629184.

The previous prime is 71403627619. The next prime is 71403627623. The reversal of 71403627621 is 12672630417.

It is an interprime number because it is at equal distance from previous prime (71403627619) and next prime (71403627623).

It is not a de Polignac number, because 71403627621 - 2¹ = 71403627619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71403627621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71403627623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591916 + ... + 702261.

It is an arithmetic number, because the mean of its divisors is an integer number (6080048244).

Almost surely, 2^71403627621 is an apocalyptic number.

It is an amenable number.

71403627621 is a deficient number, since it is larger than the sum of its proper divisors (25877144283).

71403627621 is a wasteful number, since it uses less digits than its factorization.

71403627621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294580.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 71403627621 in words is "seventy-one billion, four hundred three million, six hundred twenty-seven thousand, six hundred twenty-one".