71345356947 has 12 divisors (see below), whose sum is σ = 103060312680. Its totient is φ = 47560844448.

The previous prime is 71345356919. The next prime is 71345356949. The reversal of 71345356947 is 74965354317.

71345356947 is a `hidden beast` number, since 7 + 1 + 3 + 4 + 535 + 69 + 47 = 666.

It is not a de Polignac number, because 71345356947 - 2¹² = 71345352851 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71345356893 and 71345356902.

It is not an unprimeable number, because it can be changed into a prime (71345356949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54633 + ... + 381674.

It is an arithmetic number, because the mean of its divisors is an integer number (8588359390).

Almost surely, 2^71345356947 is an apocalyptic number.

71345356947 is a deficient number, since it is larger than the sum of its proper divisors (31714955733).

71345356947 is a wasteful number, since it uses less digits than its factorization.

71345356947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454482 (or 454479 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The spelling of 71345356947 in words is "seventy-one billion, three hundred forty-five million, three hundred fifty-six thousand, nine hundred forty-seven".