9920571627 has 4 divisors (see below), whose sum is σ = 13227428840. Its totient is φ = 6613714416.

The previous prime is 9920571613. The next prime is 9920571637. The reversal of 9920571627 is 7261750299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7261750299 = 3 ⋅2420583433.

It is not a de Polignac number, because 9920571627 - 2¹⁶ = 9920506091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9920571637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653428602 + ... + 1653428607.

It is an arithmetic number, because the mean of its divisors is an integer number (3306857210).

Almost surely, 2^9920571627 is an apocalyptic number.

9920571627 is a deficient number, since it is larger than the sum of its proper divisors (3306857213).

9920571627 is a wasteful number, since it uses less digits than its factorization.

9920571627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306857212.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 9920571627 is about 99602.0663791671. The cubic root of 9920571627 is about 2148.7154126958.

The spelling of 9920571627 in words is "nine billion, nine hundred twenty million, five hundred seventy-one thousand, six hundred twenty-seven".