71152745378 has 54 divisors (see below), whose sum is σ = 127128511377. Its totient is φ = 29831664720.

The previous prime is 71152745371. The next prime is 71152745393. The reversal of 71152745378 is 87354725117.

It can be written as a sum of positive squares in 2 ways, for example, as 60837702409 + 10315042969 = 246653^2 + 101563^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188617.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71152745371) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 53943803 + ... + 53945121.

Almost surely, 2^71152745378 is an apocalyptic number.

71152745378 is a deficient number, since it is larger than the sum of its proper divisors (55975765999).

71152745378 is a wasteful number, since it uses less digits than its factorization.

71152745378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688 (or 1345 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 50.

Multiplying 71152745378 by its sum of digits (50), we get a square (3557637268900 = 1886170²).

The spelling of 71152745378 in words is "seventy-one billion, one hundred fifty-two million, seven hundred forty-five thousand, three hundred seventy-eight".