71900249747 has 2 divisors, whose sum is σ = 71900249748. Its totient is φ = 71900249746.

The previous prime is 71900249693. The next prime is 71900249777. The reversal of 71900249747 is 74794200917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71900249747 - 2²² = 71896055443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71900249695 and 71900249704.

It is not a weakly prime, because it can be changed into another prime (71900249777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35950124873 + 35950124874.

It is an arithmetic number, because the mean of its divisors is an integer number (35950124874).

Almost surely, 2^71900249747 is an apocalyptic number.

71900249747 is a deficient number, since it is larger than the sum of its proper divisors (1).

71900249747 is an equidigital number, since it uses as much as digits as its factorization.

71900249747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 71900249747 in words is "seventy-one billion, nine hundred million, two hundred forty-nine thousand, seven hundred forty-seven".