2991948173906 has 8 divisors (see below), whose sum is σ = 4488072312960. Its totient is φ = 1495924069588.

The previous prime is 2991948173891. The next prime is 2991948173971. The reversal of 2991948173906 is 6093718491992.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24933866 + ... + 25053573.

It is an arithmetic number, because the mean of its divisors is an integer number (561009039120).

Almost surely, 2^{2991948173906} is an apocalyptic number.

2991948173906 is a deficient number, since it is larger than the sum of its proper divisors (1496124139054).

2991948173906 is a wasteful number, since it uses less digits than its factorization.

2991948173906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50017368.

The product of its (nonzero) digits is 52907904, while the sum is 68.

The spelling of 2991948173906 in words is "two trillion, nine hundred ninety-one billion, nine hundred forty-eight million, one hundred seventy-three thousand, nine hundred six".