71944515525 has 48 divisors (see below), whose sum is σ = 126906931008. Its totient is φ = 35837568000.

The previous prime is 71944515523. The next prime is 71944515547. The reversal of 71944515525 is 52551544917.

It is not a de Polignac number, because 71944515525 - 2¹ = 71944515523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71944515523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48346 + ... + 382395.

It is an arithmetic number, because the mean of its divisors is an integer number (2643894396).

Almost surely, 2^71944515525 is an apocalyptic number.

71944515525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71944515525 is a deficient number, since it is larger than the sum of its proper divisors (54962415483).

71944515525 is a wasteful number, since it uses less digits than its factorization.

71944515525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430902 (or 430897 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 48.

The spelling of 71944515525 in words is "seventy-one billion, nine hundred forty-four million, five hundred fifteen thousand, five hundred twenty-five".