47703220661 has 4 divisors (see below), whose sum is σ = 47875434732. Its totient is φ = 47531006592.

The previous prime is 47703220613. The next prime is 47703220687. The reversal of 47703220661 is 16602230774.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10262905636 + 37440315025 = 101306^2 + 193495^2 .

It is a cyclic number.

It is not a de Polignac number, because 47703220661 - 2¹⁰ = 47703219637 is a prime.

It is a super-2 number, since 2×47703220661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47703220601) by changing a digit.

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, 86106620 + ... + 86107173.

It is an arithmetic number, because the mean of its divisors is an integer number (11968858683).

Almost surely, 2^47703220661 is an apocalyptic number.

It is an amenable number.

47703220661 is a deficient number, since it is larger than the sum of its proper divisors (172214071).

47703220661 is a wasteful number, since it uses less digits than its factorization.

47703220661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172214070.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 47703220661 in words is "forty-seven billion, seven hundred three million, two hundred twenty thousand, six hundred sixty-one".