99953477281 has 4 divisors (see below), whose sum is σ = 114232545472. Its totient is φ = 85674409092.

The previous prime is 99953477209. The next prime is 99953477291. The reversal of 99953477281 is 18277435999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99953477281 - 2¹⁷ = 99953346209 is a prime.

It is a super-2 number, since 2×99953477281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99953477291) 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, 7139534085 + ... + 7139534098.

It is an arithmetic number, because the mean of its divisors is an integer number (28558136368).

Almost surely, 2^99953477281 is an apocalyptic number.

It is an amenable number.

99953477281 is a deficient number, since it is larger than the sum of its proper divisors (14279068191).

99953477281 is a wasteful number, since it uses less digits than its factorization.

99953477281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14279068190.

The product of its digits is 34292160, while the sum is 64.

The spelling of 99953477281 in words is "ninety-nine billion, nine hundred fifty-three million, four hundred seventy-seven thousand, two hundred eighty-one".