21757072333359 has 32 divisors (see below), whose sum is σ = 31683728609280. Its totient is φ = 13170664389600.

The previous prime is 21757072333357. The next prime is 21757072333391. The reversal of 21757072333359 is 95333327075712.

It is not a de Polignac number, because 21757072333359 - 2¹ = 21757072333357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21757072333299 and 21757072333308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21757072333357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97122522 + ... + 97346280.

It is an arithmetic number, because the mean of its divisors is an integer number (990116519040).

Almost surely, 2^{21757072333359} is an apocalyptic number.

21757072333359 is a deficient number, since it is larger than the sum of its proper divisors (9926656275921).

21757072333359 is a wasteful number, since it uses less digits than its factorization.

21757072333359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227211.

The product of its (nonzero) digits is 25004700, while the sum is 57.

The spelling of 21757072333359 in words is "twenty-one trillion, seven hundred fifty-seven billion, seventy-two million, three hundred thirty-three thousand, three hundred fifty-nine".