20240067421251 has 20 divisors (see below), whose sum is σ = 31052329001232. Its totient is φ = 13128692379408.

The previous prime is 20240067421247. The next prime is 20240067421271. The reversal of 20240067421251 is 15212476004202.

20240067421251 is a `hidden beast` number, since 202 + 4 + 0 + 0 + 6 + 7 + 421 + 25 + 1 = 666.

It is not a de Polignac number, because 20240067421251 - 2² = 20240067421247 is a prime.

It is a super-2 number, since 2×20240067421251² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20240067421271) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3376718295 + ... + 3376724288.

Almost surely, 2^{20240067421251} is an apocalyptic number.

20240067421251 is a deficient number, since it is larger than the sum of its proper divisors (10812261579981).

20240067421251 is an equidigital number, since it uses as much as digits as its factorization.

20240067421251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6753442632 (or 6753442623 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 20240067421251 in words is "twenty trillion, two hundred forty billion, sixty-seven million, four hundred twenty-one thousand, two hundred fifty-one".