71900249719 has 4 divisors (see below), whose sum is σ = 71900786160. Its totient is φ = 71899713280.

The previous prime is 71900249693. The next prime is 71900249747. The reversal of 71900249719 is 91794200917.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71900249719 - 2⁹ = 71900249207 is a prime.

It is a super-2 number, since 2×71900249719² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71900249119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124422 + ... + 399100.

It is an arithmetic number, because the mean of its divisors is an integer number (17975196540).

Almost surely, 2^71900249719 is an apocalyptic number.

71900249719 is a deficient number, since it is larger than the sum of its proper divisors (536441).

71900249719 is a wasteful number, since it uses less digits than its factorization.

71900249719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536440.

The product of its (nonzero) digits is 285768, while the sum is 49.

The spelling of 71900249719 in words is "seventy-one billion, nine hundred million, two hundred forty-nine thousand, seven hundred nineteen".