71838901450 has 12 divisors (see below), whose sum is σ = 133620356790. Its totient is φ = 28735560560.

The previous prime is 71838901429. The next prime is 71838901451. The reversal of 71838901450 is 5410983817.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 44610931369 + 27227970081 = 211213^2 + 165009^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71838901450.

It is not an unprimeable number, because it can be changed into a prime (71838901451) 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 5 ways as a sum of consecutive naturals, for example, 718388965 + ... + 718389064.

Almost surely, 2^71838901450 is an apocalyptic number.

71838901450 is a deficient number, since it is larger than the sum of its proper divisors (61781455340).

71838901450 is a wasteful number, since it uses less digits than its factorization.

71838901450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436778041 (or 1436778036 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 71838901450 in words is "seventy-one billion, eight hundred thirty-eight million, nine hundred one thousand, four hundred fifty".