2050120661555 has 8 divisors (see below), whose sum is σ = 2460158240112. Its totient is φ = 1640087565088.

The previous prime is 2050120661549. The next prime is 2050120661623. The reversal of 2050120661555 is 5551660210502.

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

It is a cyclic number.

It is not a de Polignac number, because 2050120661555 - 2⁸ = 2050120661299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15092 + ... + 2024961.

It is an arithmetic number, because the mean of its divisors is an integer number (307519780014).

Almost surely, 2^{2050120661555} is an apocalyptic number.

2050120661555 is a deficient number, since it is larger than the sum of its proper divisors (410037578557).

2050120661555 is a wasteful number, since it uses less digits than its factorization.

2050120661555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241045.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 2050120661555 in words is "two trillion, fifty billion, one hundred twenty million, six hundred sixty-one thousand, five hundred fifty-five".