99966625942 has 4 divisors (see below), whose sum is σ = 149949938916. Its totient is φ = 49983312970.

The previous prime is 99966625933. The next prime is 99966625951. The reversal of 99966625942 is 24952666999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24952666999 = 13 ⋅1919435923.

It is an interprime number because it is at equal distance from previous prime (99966625933) and next prime (99966625951).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24991656484 + ... + 24991656487.

It is an arithmetic number, because the mean of its divisors is an integer number (37487484729).

Almost surely, 2^99966625942 is an apocalyptic number.

99966625942 is a deficient number, since it is larger than the sum of its proper divisors (49983312974).

99966625942 is a wasteful number, since it uses less digits than its factorization.

99966625942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49983312973.

The product of its digits is 113374080, while the sum is 67.

The spelling of 99966625942 in words is "ninety-nine billion, nine hundred sixty-six million, six hundred twenty-five thousand, nine hundred forty-two".