71397362649 has 32 divisors (see below), whose sum is σ = 98319715200. Its totient is φ = 46056407040.

The previous prime is 71397362591. The next prime is 71397362653. The reversal of 71397362649 is 94626379317.

It is not a de Polignac number, because 71397362649 - 2¹² = 71397358553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71397362149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26550297 + ... + 26552985.

It is an arithmetic number, because the mean of its divisors is an integer number (3072491100).

Almost surely, 2^71397362649 is an apocalyptic number.

It is an amenable number.

71397362649 is a deficient number, since it is larger than the sum of its proper divisors (26922352551).

71397362649 is a wasteful number, since it uses less digits than its factorization.

71397362649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425.

The product of its digits is 10287648, while the sum is 57.

The spelling of 71397362649 in words is "seventy-one billion, three hundred ninety-seven million, three hundred sixty-two thousand, six hundred forty-nine".