102991008147 has 8 divisors (see below), whose sum is σ = 137344489920. Its totient is φ = 68649099240.

The previous prime is 102991008139. The next prime is 102991008151. The reversal of 102991008147 is 741800199201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102991008147 - 2³ = 102991008139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102991008099 and 102991008108.

It is not an unprimeable number, because it can be changed into a prime (102991006147) 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, 2872429 + ... + 2908062.

It is an arithmetic number, because the mean of its divisors is an integer number (17168061240).

Almost surely, 2^102991008147 is an apocalyptic number.

102991008147 is a deficient number, since it is larger than the sum of its proper divisors (34353481773).

102991008147 is an equidigital number, since it uses as much as digits as its factorization.

102991008147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786433.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 102991008147 in words is "one hundred two billion, nine hundred ninety-one million, eight thousand, one hundred forty-seven".