73921047019 has 2 divisors, whose sum is σ = 73921047020. Its totient is φ = 73921047018.

The previous prime is 73921046957. The next prime is 73921047029. The reversal of 73921047019 is 91074012937.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73921047019 - 2¹³ = 73921038827 is a prime.

It is a super-2 number, since 2×73921047019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73921047029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36960523509 + 36960523510.

It is an arithmetic number, because the mean of its divisors is an integer number (36960523510).

Almost surely, 2^73921047019 is an apocalyptic number.

73921047019 is a deficient number, since it is larger than the sum of its proper divisors (1).

73921047019 is an equidigital number, since it uses as much as digits as its factorization.

73921047019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 73921047019 in words is "seventy-three billion, nine hundred twenty-one million, forty-seven thousand, nineteen".