651420055366 has 32 divisors (see below), whose sum is σ = 1012347237888. Its totient is φ = 314189645280.

The previous prime is 651420055327. The next prime is 651420055367. The reversal of 651420055366 is 663550024156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651420055367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3185481 + ... + 3383803.

It is an arithmetic number, because the mean of its divisors is an integer number (31635851184).

Almost surely, 2^651420055366 is an apocalyptic number.

651420055366 is a deficient number, since it is larger than the sum of its proper divisors (360927182522).

651420055366 is a wasteful number, since it uses less digits than its factorization.

651420055366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198876.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 651420055366 in words is "six hundred fifty-one billion, four hundred twenty million, fifty-five thousand, three hundred sixty-six".