22071530477 has 2 divisors, whose sum is σ = 22071530478. Its totient is φ = 22071530476.

The previous prime is 22071530461. The next prime is 22071530513. The reversal of 22071530477 is 77403517022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21649885321 + 421645156 = 147139^2 + 20534^2 .

It is a cyclic number.

It is not a de Polignac number, because 22071530477 - 2⁴ = 22071530461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22071530477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22071530777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11035765238 + 11035765239.

It is an arithmetic number, because the mean of its divisors is an integer number (11035765239).

Almost surely, 2^22071530477 is an apocalyptic number.

It is an amenable number.

22071530477 is a deficient number, since it is larger than the sum of its proper divisors (1).

22071530477 is an equidigital number, since it uses as much as digits as its factorization.

22071530477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 38.

The spelling of 22071530477 in words is "twenty-two billion, seventy-one million, five hundred thirty thousand, four hundred seventy-seven".