99425678534 has 16 divisors (see below), whose sum is σ = 183555099168. Its totient is φ = 39333235392.

The previous prime is 99425678533. The next prime is 99425678549. The reversal of 99425678534 is 43587652499.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99425678533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273147287 + ... + 273147650.

It is an arithmetic number, because the mean of its divisors is an integer number (11472193698).

Almost surely, 2^99425678534 is an apocalyptic number.

99425678534 is a deficient number, since it is larger than the sum of its proper divisors (84129420634).

99425678534 is a wasteful number, since it uses less digits than its factorization.

99425678534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546294959.

The product of its digits is 65318400, while the sum is 62.

The spelling of 99425678534 in words is "ninety-nine billion, four hundred twenty-five million, six hundred seventy-eight thousand, five hundred thirty-four".