989770251141 has 48 divisors (see below), whose sum is σ = 1655048723328. Its totient is φ = 558302169600.

The previous prime is 989770251139. The next prime is 989770251161. The reversal of 989770251141 is 141152077989.

989770251141 is a `hidden beast` number, since 9 + 89 + 7 + 7 + 0 + 2 + 511 + 41 = 666.

It is not a de Polignac number, because 989770251141 - 2¹ = 989770251139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989770251161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1632961 + ... + 2155481.

It is an arithmetic number, because the mean of its divisors is an integer number (34480181736).

Almost surely, 2^989770251141 is an apocalyptic number.

It is an amenable number.

989770251141 is a deficient number, since it is larger than the sum of its proper divisors (665278472187).

989770251141 is a wasteful number, since it uses less digits than its factorization.

989770251141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522922 (or 522919 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 989770251141 in words is "nine hundred eighty-nine billion, seven hundred seventy million, two hundred fifty-one thousand, one hundred forty-one".