99554955451 has 4 divisors (see below), whose sum is σ = 113777091952. Its totient is φ = 85332818952.

The previous prime is 99554955391. The next prime is 99554955469. The reversal of 99554955451 is 15455945599.

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

It is a cyclic number.

It is not a de Polignac number, because 99554955451 - 2¹¹ = 99554953403 is a prime.

It is a super-2 number, since 2×99554955451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99554955451.

It is not an unprimeable number, because it can be changed into a prime (99554955251) 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, 7111068240 + ... + 7111068253.

It is an arithmetic number, because the mean of its divisors is an integer number (28444272988).

Almost surely, 2^99554955451 is an apocalyptic number.

99554955451 is a deficient number, since it is larger than the sum of its proper divisors (14222136501).

99554955451 is a wasteful number, since it uses less digits than its factorization.

99554955451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14222136500.

The product of its digits is 36450000, while the sum is 61.

The spelling of 99554955451 in words is "ninety-nine billion, five hundred fifty-four million, nine hundred fifty-five thousand, four hundred fifty-one".