99994143654 has 64 divisors (see below), whose sum is σ = 233991072000. Its totient is φ = 31565401920.

The previous prime is 99994143653. The next prime is 99994143703. The reversal of 99994143654 is 45634149999.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99994143591 and 99994143600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99994143653) 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, 2998834 + ... + 3031994.

It is an arithmetic number, because the mean of its divisors is an integer number (3656110500).

Almost surely, 2^99994143654 is an apocalyptic number.

99994143654 is an abundant number, since it is smaller than the sum of its proper divisors (133996928346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99994143654 is a wasteful number, since it uses less digits than its factorization.

99994143654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36130 (or 36124 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The spelling of 99994143654 in words is "ninety-nine billion, nine hundred ninety-four million, one hundred forty-three thousand, six hundred fifty-four".