51454206666 has 64 divisors (see below), whose sum is σ = 114880296960. Its totient is φ = 17070957360.

The previous prime is 51454206659. The next prime is 51454206677. The reversal of 51454206666 is 66660245415.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11313805 + ... + 11318351.

It is an arithmetic number, because the mean of its divisors is an integer number (1795004640).

Almost surely, 2^51454206666 is an apocalyptic number.

51454206666 is an abundant number, since it is smaller than the sum of its proper divisors (63426090294).

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

51454206666 is a wasteful number, since it uses less digits than its factorization.

51454206666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496 (or 5490 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 51454206666 in words is "fifty-one billion, four hundred fifty-four million, two hundred six thousand, six hundred sixty-six".