2991217072946 has 8 divisors (see below), whose sum is σ = 4487562501660. Its totient is φ = 1495362905728.

The previous prime is 2991217072931. The next prime is 2991217072957. The reversal of 2991217072946 is 6492707121992.

It can be written as a sum of positive squares in 2 ways, for example, as 2505841510225 + 485375562721 = 1582985^2 + 696689^2 .

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

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, 122800151 + ... + 122824506.

Almost surely, 2^{2991217072946} is an apocalyptic number.

2991217072946 is a deficient number, since it is larger than the sum of its proper divisors (1496345428714).

2991217072946 is a wasteful number, since it uses less digits than its factorization.

2991217072946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245630748.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 2991217072946 in words is "two trillion, nine hundred ninety-one billion, two hundred seventeen million, seventy-two thousand, nine hundred forty-six".