99918667023 has 16 divisors (see below), whose sum is σ = 152345438976. Its totient is φ = 57063222720.

The previous prime is 99918667021. The next prime is 99918667031. The reversal of 99918667023 is 32076681999.

It is not a de Polignac number, because 99918667023 - 2¹ = 99918667021 is a prime.

It is a super-3 number, since 3×99918667023³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99918667021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344558 + ... + 1416923.

It is an arithmetic number, because the mean of its divisors is an integer number (9521589936).

Almost surely, 2^99918667023 is an apocalyptic number.

99918667023 is a deficient number, since it is larger than the sum of its proper divisors (52426771953).

99918667023 is a wasteful number, since it uses less digits than its factorization.

99918667023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763214.

The product of its (nonzero) digits is 8817984, while the sum is 60.

It can be divided in two parts, 99918 and 667023, that added together give a triangular number (766941 = T₁₂₃₈).

The spelling of 99918667023 in words is "ninety-nine billion, nine hundred eighteen million, six hundred sixty-seven thousand, twenty-three".