2021761355253 has 8 divisors (see below), whose sum is σ = 2695690187328. Its totient is φ = 1347836713344.

The previous prime is 2021761355233. The next prime is 2021761355279. The reversal of 2021761355253 is 3525531671202.

It is a happy number.

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

It is not a de Polignac number, because 2021761355253 - 2⁶ = 2021761355189 is a prime.

It is a super-3 number, since 3×2021761355253³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021761355213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341376 + ... + 2039622.

It is an arithmetic number, because the mean of its divisors is an integer number (336961273416).

Almost surely, 2^{2021761355253} is an apocalyptic number.

It is an amenable number.

2021761355253 is a deficient number, since it is larger than the sum of its proper divisors (673928832075).

2021761355253 is a wasteful number, since it uses less digits than its factorization.

2021761355253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095083.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 2021761355253 in words is "two trillion, twenty-one billion, seven hundred sixty-one million, three hundred fifty-five thousand, two hundred fifty-three".