375380769721 has 2 divisors, whose sum is σ = 375380769722. Its totient is φ = 375380769720.

The previous prime is 375380769707. The next prime is 375380769781. The reversal of 375380769721 is 127967083573.

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., 261903415225 + 113477354496 = 511765^2 + 336864^2 .

It is a cyclic number.

It is not a de Polignac number, because 375380769721 - 2²³ = 375372381113 is a prime.

It is not a weakly prime, because it can be changed into another prime (375380769781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187690384860 + 187690384861.

It is an arithmetic number, because the mean of its divisors is an integer number (187690384861).

Almost surely, 2^375380769721 is an apocalyptic number.

It is an amenable number.

375380769721 is a deficient number, since it is larger than the sum of its proper divisors (1).

375380769721 is an equidigital number, since it uses as much as digits as its factorization.

375380769721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13335840, while the sum is 58.

The spelling of 375380769721 in words is "three hundred seventy-five billion, three hundred eighty million, seven hundred sixty-nine thousand, seven hundred twenty-one".