20275481651 has 2 divisors, whose sum is σ = 20275481652. Its totient is φ = 20275481650.

The previous prime is 20275481587. The next prime is 20275481713. The reversal of 20275481651 is 15618457202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20275481651 - 2⁶ = 20275481587 is a prime.

It is a super-2 number, since 2×20275481651² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20275481599 and 20275481608.

It is not a weakly prime, because it can be changed into another prime (20275481351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137740825 + 10137740826.

It is an arithmetic number, because the mean of its divisors is an integer number (10137740826).

Almost surely, 2^20275481651 is an apocalyptic number.

20275481651 is a deficient number, since it is larger than the sum of its proper divisors (1).

20275481651 is an equidigital number, since it uses as much as digits as its factorization.

20275481651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 20275481651 in words is "twenty billion, two hundred seventy-five million, four hundred eighty-one thousand, six hundred fifty-one".