20750751377 has 2 divisors, whose sum is σ = 20750751378. Its totient is φ = 20750751376.

The previous prime is 20750751353. The next prime is 20750751451. The reversal of 20750751377 is 77315705702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17245992976 + 3504758401 = 131324^2 + 59201^2 .

It is a cyclic number.

It is not a de Polignac number, because 20750751377 - 2¹⁶ = 20750685841 is a prime.

It is a super-2 number, since 2×20750751377² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20750751577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10375375688 + 10375375689.

It is an arithmetic number, because the mean of its divisors is an integer number (10375375689).

Almost surely, 2^20750751377 is an apocalyptic number.

It is an amenable number.

20750751377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20750751377 is an equidigital number, since it uses as much as digits as its factorization.

20750751377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360150, while the sum is 44.

The spelling of 20750751377 in words is "twenty billion, seven hundred fifty million, seven hundred fifty-one thousand, three hundred seventy-seven".