47721076505 has 4 divisors (see below), whose sum is σ = 57265291812. Its totient is φ = 38176861200.

The previous prime is 47721076489. The next prime is 47721076621. The reversal of 47721076505 is 50567012774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50567012774 = 2 ⋅25283506387.

It can be written as a sum of positive squares in 2 ways, for example, as 34508263696 + 13212812809 = 185764^2 + 114947^2 .

It is not a de Polignac number, because 47721076505 - 2⁴ = 47721076489 is a prime.

It is a super-2 number, since 2×47721076505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4772107646 + ... + 4772107655.

It is an arithmetic number, because the mean of its divisors is an integer number (14316322953).

Almost surely, 2^47721076505 is an apocalyptic number.

It is an amenable number.

47721076505 is a deficient number, since it is larger than the sum of its proper divisors (9544215307).

47721076505 is an equidigital number, since it uses as much as digits as its factorization.

47721076505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9544215306.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 47721076505 in words is "forty-seven billion, seven hundred twenty-one million, seventy-six thousand, five hundred five".