47821101457 has 2 divisors, whose sum is σ = 47821101458. Its totient is φ = 47821101456.

The previous prime is 47821101451. The next prime is 47821101481. The reversal of 47821101457 is 75410112874.

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., 46106396176 + 1714705281 = 214724^2 + 41409^2 .

It is a cyclic number.

It is not a de Polignac number, because 47821101457 - 2⁷ = 47821101329 is a prime.

It is not a weakly prime, because it can be changed into another prime (47821101451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23910550728 + 23910550729.

It is an arithmetic number, because the mean of its divisors is an integer number (23910550729).

Almost surely, 2^47821101457 is an apocalyptic number.

It is an amenable number.

47821101457 is a deficient number, since it is larger than the sum of its proper divisors (1).

47821101457 is an equidigital number, since it uses as much as digits as its factorization.

47821101457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 40.

The spelling of 47821101457 in words is "forty-seven billion, eight hundred twenty-one million, one hundred one thousand, four hundred fifty-seven".