2990091755961 has 6 divisors (see below), whose sum is σ = 4319021425290. Its totient is φ = 1993394503968.

The previous prime is 2990091755923. The next prime is 2990091755969. The reversal of 2990091755961 is 1695571900992.

2990091755961 is a `hidden beast` number, since 2 + 9 + 9 + 0 + 0 + 9 + 17 + 559 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2981081949561 + 9009806400 = 1726581^2 + 94920^2 .

It is not a de Polignac number, because 2990091755961 - 2¹⁴ = 2990091739577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2990091755969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166116208656 + ... + 166116208673.

It is an arithmetic number, because the mean of its divisors is an integer number (719836904215).

Almost surely, 2^{2990091755961} is an apocalyptic number.

It is an amenable number.

2990091755961 is a deficient number, since it is larger than the sum of its proper divisors (1328929669329).

2990091755961 is a wasteful number, since it uses less digits than its factorization.

2990091755961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332232417335 (or 332232417332 counting only the distinct ones).

The product of its (nonzero) digits is 13778100, while the sum is 63.

The spelling of 2990091755961 in words is "two trillion, nine hundred ninety billion, ninety-one million, seven hundred fifty-five thousand, nine hundred sixty-one".