1772271354761 has 2 divisors, whose sum is σ = 1772271354762. Its totient is φ = 1772271354760.

The previous prime is 1772271354751. The next prime is 1772271354779. The reversal of 1772271354761 is 1674531722771.

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., 1151019996736 + 621251358025 = 1072856^2 + 788195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1772271354761 - 2⁶ = 1772271354697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1772271354751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 886135677380 + 886135677381.

It is an arithmetic number, because the mean of its divisors is an integer number (886135677381).

Almost surely, 2^{1772271354761} is an apocalyptic number.

It is an amenable number.

1772271354761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1772271354761 is an equidigital number, since it uses as much as digits as its factorization.

1772271354761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3457440, while the sum is 53.

The spelling of 1772271354761 in words is "one trillion, seven hundred seventy-two billion, two hundred seventy-one million, three hundred fifty-four thousand, seven hundred sixty-one".