20551420436462 has 16 divisors (see below), whose sum is σ = 31151723224032. Its totient is φ = 10167639319200.

The previous prime is 20551420436431. The next prime is 20551420436513. The reversal of 20551420436462 is 26463402415502.

It is a happy number.

It is a congruent 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, 31330553 + ... + 31979780.

It is an arithmetic number, because the mean of its divisors is an integer number (1946982701502).

Almost surely, 2^{20551420436462} is an apocalyptic number.

20551420436462 is a deficient number, since it is larger than the sum of its proper divisors (10600302787570).

20551420436462 is a wasteful number, since it uses less digits than its factorization.

20551420436462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63312043.

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 20551420436462 in words is "twenty trillion, five hundred fifty-one billion, four hundred twenty million, four hundred thirty-six thousand, four hundred sixty-two".