99872147011 has 32 divisors (see below), whose sum is σ = 124408350080. Its totient is φ = 78065565696.

The previous prime is 99872146999. The next prime is 99872147033. The reversal of 99872147011 is 11074127899.

It is a 17-Lehmer number, since φ(99872147011) divides (99872147011-1)¹⁷.

It is a cyclic number.

It is not a de Polignac number, because 99872147011 - 2¹¹ = 99872144963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99872147051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5083375 + ... + 5102983.

It is an arithmetic number, because the mean of its divisors is an integer number (3887760940).

Almost surely, 2^99872147011 is an apocalyptic number.

99872147011 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99872147011 is a deficient number, since it is larger than the sum of its proper divisors (24536203069).

99872147011 is a wasteful number, since it uses less digits than its factorization.

99872147011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20303.

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 99872147011 in words is "ninety-nine billion, eight hundred seventy-two million, one hundred forty-seven thousand, eleven".