71838901449 has 48 divisors (see below), whose sum is σ = 120680561664. Its totient is φ = 40329187200.

The previous prime is 71838901429. The next prime is 71838901451. The reversal of 71838901449 is 94410983817.

It is not a de Polignac number, because 71838901449 - 2⁹ = 71838900937 is a prime.

It is a super-2 number, since 2×71838901449² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71838901395 and 71838901404.

It is not an unprimeable number, because it can be changed into a prime (71838901429) 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 47 ways as a sum of consecutive naturals, for example, 3305679 + ... + 3327339.

It is an arithmetic number, because the mean of its divisors is an integer number (2514178368).

Almost surely, 2^71838901449 is an apocalyptic number.

It is an amenable number.

71838901449 is a deficient number, since it is larger than the sum of its proper divisors (48841660215).

71838901449 is a wasteful number, since it uses less digits than its factorization.

71838901449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22598 (or 22595 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 71838901449 in words is "seventy-one billion, eight hundred thirty-eight million, nine hundred one thousand, four hundred forty-nine".