4000771010321 has 2 divisors, whose sum is σ = 4000771010322. Its totient is φ = 4000771010320.

The previous prime is 4000771010293. The next prime is 4000771010351. The reversal of 4000771010321 is 1230101770004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3919762465921 + 81008544400 = 1979839^2 + 284620^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000771010321 - 2³⁸ = 3725893103377 is a prime.

It is not a weakly prime, because it can be changed into another prime (4000771010351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000385505160 + 2000385505161.

It is an arithmetic number, because the mean of its divisors is an integer number (2000385505161).

Almost surely, 2^{4000771010321} is an apocalyptic number.

It is an amenable number.

4000771010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000771010321 is an equidigital number, since it uses as much as digits as its factorization.

4000771010321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 4000771010321 its reverse (1230101770004), we get a palindrome (5230872780325).

The spelling of 4000771010321 in words is "four trillion, seven hundred seventy-one million, ten thousand, three hundred twenty-one".