2990764843561 has 4 divisors (see below), whose sum is σ = 3262652556624. Its totient is φ = 2718877130500.

The previous prime is 2990764843531. The next prime is 2990764843667. The reversal of 2990764843561 is 1653484670992.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2990764843561 - 2⁷ = 2990764843433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2990764843493 and 2990764843502.

It is not an unprimeable number, because it can be changed into a prime (2990764843501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135943856515 + ... + 135943856536.

It is an arithmetic number, because the mean of its divisors is an integer number (815663139156).

It is a 1-persistent number, because it is pandigital, but 2⋅2990764843561 = 5981529687122 is not.

Almost surely, 2^{2990764843561} is an apocalyptic number.

It is an amenable number.

2990764843561 is a deficient number, since it is larger than the sum of its proper divisors (271887713063).

2990764843561 is a wasteful number, since it uses less digits than its factorization.

2990764843561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271887713062.

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 2990764843561 in words is "two trillion, nine hundred ninety billion, seven hundred sixty-four million, eight hundred forty-three thousand, five hundred sixty-one".