71294123649 has 8 divisors (see below), whose sum is σ = 108638664640. Its totient is φ = 40739499216.

The previous prime is 71294123617. The next prime is 71294123657. The reversal of 71294123649 is 94632149217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71294123649 - 2⁵ = 71294123617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71294123598 and 71294123607.

It is not an unprimeable number, because it can be changed into a prime (71294103649) 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 in 7 ways as a sum of consecutive naturals, for example, 1697479114 + ... + 1697479155.

It is an arithmetic number, because the mean of its divisors is an integer number (13579833080).

Almost surely, 2^71294123649 is an apocalyptic number.

It is an amenable number.

71294123649 is a deficient number, since it is larger than the sum of its proper divisors (37344540991).

71294123649 is a wasteful number, since it uses less digits than its factorization.

71294123649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394958279.

The product of its digits is 653184, while the sum is 48.

The spelling of 71294123649 in words is "seventy-one billion, two hundred ninety-four million, one hundred twenty-three thousand, six hundred forty-nine".