71430747145 has 16 divisors (see below), whose sum is σ = 87822603792. Its totient is φ = 55741271040.

The previous prime is 71430747127. The next prime is 71430747163. The reversal of 71430747145 is 54174703417.

It is an interprime number because it is at equal distance from previous prime (71430747127) and next prime (71430747163).

It can be written as a sum of positive squares in 8 ways, for example, as 10192315849 + 61238431296 = 100957^2 + 247464^2 .

It is not a de Polignac number, because 71430747145 - 2¹⁷ = 71430616073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1316779 + ... + 1369951.

It is an arithmetic number, because the mean of its divisors is an integer number (5488912737).

Almost surely, 2^71430747145 is an apocalyptic number.

It is an amenable number.

71430747145 is a deficient number, since it is larger than the sum of its proper divisors (16391856647).

71430747145 is a wasteful number, since it uses less digits than its factorization.

71430747145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59772.

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 71430747145 in words is "seventy-one billion, four hundred thirty million, seven hundred forty-seven thousand, one hundred forty-five".