21367217142354 has 16 divisors (see below), whose sum is σ = 42734584261440. Its totient is φ = 7122380718000.

The previous prime is 21367217142301. The next prime is 21367217142389. The reversal of 21367217142354 is 45324171276312.

It is a super-2 number, since 2×21367217142354² (a number of 27 digits) contains 22 as substring.

It is a Curzon 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, 4352649 + ... + 7853660.

It is an arithmetic number, because the mean of its divisors is an integer number (2670911516340).

Almost surely, 2^{21367217142354} is an apocalyptic number.

21367217142354 is an abundant number, since it is smaller than the sum of its proper divisors (21367367119086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21367217142354 is a wasteful number, since it uses less digits than its factorization.

21367217142354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12498065.

The product of its digits is 1693440, while the sum is 48.

The spelling of 21367217142354 in words is "twenty-one trillion, three hundred sixty-seven billion, two hundred seventeen million, one hundred forty-two thousand, three hundred fifty-four".