71503928929 has 2 divisors, whose sum is σ = 71503928930. Its totient is φ = 71503928928.

The previous prime is 71503928921. The next prime is 71503928933. The reversal of 71503928929 is 92982930517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57878736400 + 13625192529 = 240580^2 + 116727^2 .

It is a cyclic number.

It is not a de Polignac number, because 71503928929 - 2³ = 71503928921 is a prime.

It is a super-2 number, since 2×71503928929² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71503928929.

It is not a weakly prime, because it can be changed into another prime (71503928921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35751964464 + 35751964465.

It is an arithmetic number, because the mean of its divisors is an integer number (35751964465).

Almost surely, 2^71503928929 is an apocalyptic number.

It is an amenable number.

71503928929 is a deficient number, since it is larger than the sum of its proper divisors (1).

71503928929 is an equidigital number, since it uses as much as digits as its factorization.

71503928929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 71503928929 in words is "seventy-one billion, five hundred three million, nine hundred twenty-eight thousand, nine hundred twenty-nine".