1553808930261 has 16 divisors (see below), whose sum is σ = 2431700978304. Its totient is φ = 863893767744.

The previous prime is 1553808930251. The next prime is 1553808930269. The reversal of 1553808930261 is 1620398083551.

It is a happy number.

It is not a de Polignac number, because 1553808930261 - 2⁵ = 1553808930229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553808930269) 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 15 ways as a sum of consecutive naturals, for example, 999876270 + ... + 999877823.

It is an arithmetic number, because the mean of its divisors is an integer number (151981311144).

Almost surely, 2^{1553808930261} is an apocalyptic number.

It is an amenable number.

1553808930261 is a deficient number, since it is larger than the sum of its proper divisors (877892048043).

1553808930261 is a wasteful number, since it uses less digits than its factorization.

1553808930261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999754140.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 1553808930261 in words is "one trillion, five hundred fifty-three billion, eight hundred eight million, nine hundred thirty thousand, two hundred sixty-one".