47921113516805 has 8 divisors (see below), whose sum is σ = 57506254962072. Its totient is φ = 38336278318848.

The previous prime is 47921113516769. The next prime is 47921113516807. The reversal of 47921113516805 is 50861531112974.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1401593164321 + 46519520352484 = 1183889^2 + 6820522^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47921113516805 - 2²² = 47921109322501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47921113516807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76217432 + ... + 76843601.

It is an arithmetic number, because the mean of its divisors is an integer number (7188281870259).

It is a 2-persistent number, because it is pandigital, and so is 2⋅47921113516805 = 95842227033610, but 3⋅47921113516805 = 143763340550415 is not.

Almost surely, 2^{47921113516805} is an apocalyptic number.

It is an amenable number.

47921113516805 is a deficient number, since it is larger than the sum of its proper divisors (9585141445267).

47921113516805 is a wasteful number, since it uses less digits than its factorization.

47921113516805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153123655.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 47921113516805 in words is "forty-seven trillion, nine hundred twenty-one billion, one hundred thirteen million, five hundred sixteen thousand, eight hundred five".