21900020367355 has 16 divisors (see below), whose sum is σ = 28337074968384. Its totient is φ = 16152031198080.

The previous prime is 21900020367287. The next prime is 21900020367359. The reversal of 21900020367355 is 55376302000912.

It is not a de Polignac number, because 21900020367355 - 2³³ = 21891430432763 is a prime.

It is a super-2 number, since 2×21900020367355² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21900020367359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211317951 + ... + 211421560.

It is an arithmetic number, because the mean of its divisors is an integer number (1771067185524).

Almost surely, 2^{21900020367355} is an apocalyptic number.

21900020367355 is a deficient number, since it is larger than the sum of its proper divisors (6437054601029).

21900020367355 is a wasteful number, since it uses less digits than its factorization.

21900020367355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422740326.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 21900020367355 in words is "twenty-one trillion, nine hundred billion, twenty million, three hundred sixty-seven thousand, three hundred fifty-five".