20421465126462 has 48 divisors (see below), whose sum is σ = 44686985861232. Its totient is φ = 6739465991040.

The previous prime is 20421465126397. The next prime is 20421465126463. The reversal of 20421465126462 is 26462156412402.

20421465126462 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 1 + 4 + 65 + 126 + 462 = 666.

It is a super-2 number, since 2×20421465126462² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421465126463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8089 + ... + 6390852.

It is an arithmetic number, because the mean of its divisors is an integer number (930978872109).

Almost surely, 2^{20421465126462} is an apocalyptic number.

20421465126462 is an abundant number, since it is smaller than the sum of its proper divisors (24265520734770).

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

20421465126462 is a wasteful number, since it uses less digits than its factorization.

20421465126462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400713 (or 6400710 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 20421465126462 in words is "twenty trillion, four hundred twenty-one billion, four hundred sixty-five million, one hundred twenty-six thousand, four hundred sixty-two".