71503552148 has 24 divisors (see below), whose sum is σ = 143229546432. Its totient is φ = 30596713344.

The previous prime is 71503552147. The next prime is 71503552193. The reversal of 71503552148 is 84125530517.

It is a happy number.

It is a super-2 number, since 2×71503552148² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71503552147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967765 + ... + 2003772.

It is an arithmetic number, because the mean of its divisors is an integer number (5967897768).

Almost surely, 2^71503552148 is an apocalyptic number.

It is an amenable number.

71503552148 is an abundant number, since it is smaller than the sum of its proper divisors (71725994284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71503552148 is a wasteful number, since it uses less digits than its factorization.

71503552148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972191 (or 3972189 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 71503552148 in words is "seventy-one billion, five hundred three million, five hundred fifty-two thousand, one hundred forty-eight".