71838901448 has 64 divisors (see below), whose sum is σ = 139349049840. Its totient is φ = 34698240000.

The previous prime is 71838901429. The next prime is 71838901451. The reversal of 71838901448 is 84410983817.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18495456004 + 53343445444 = 135998^2 + 230962^2 .

It is a super-2 number, since 2×71838901448² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71838901448.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14305178 + ... + 14310198.

Almost surely, 2^71838901448 is an apocalyptic number.

It is an amenable number.

71838901448 is a deficient number, since it is larger than the sum of its proper divisors (67510148392).

71838901448 is a wasteful number, since it uses less digits than its factorization.

71838901448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490 (or 5486 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 71838901448 in words is "seventy-one billion, eight hundred thirty-eight million, nine hundred one thousand, four hundred forty-eight".