47877621569 has 2 divisors, whose sum is σ = 47877621570. Its totient is φ = 47877621568.

The previous prime is 47877621563. The next prime is 47877621581. The reversal of 47877621569 is 96512677874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31136367025 + 16741254544 = 176455^2 + 129388^2 .

It is a cyclic number.

It is not a de Polignac number, because 47877621569 - 2²⁸ = 47609186113 is a prime.

It is a super-2 number, since 2×47877621569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47877621563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23938810784 + 23938810785.

It is an arithmetic number, because the mean of its divisors is an integer number (23938810785).

Almost surely, 2^47877621569 is an apocalyptic number.

It is an amenable number.

47877621569 is a deficient number, since it is larger than the sum of its proper divisors (1).

47877621569 is an equidigital number, since it uses as much as digits as its factorization.

47877621569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35562240, while the sum is 62.

The spelling of 47877621569 in words is "forty-seven billion, eight hundred seventy-seven million, six hundred twenty-one thousand, five hundred sixty-nine".