52215661654 has 16 divisors (see below), whose sum is σ = 84390910128. Its totient is φ = 24087383712.

The previous prime is 52215661651. The next prime is 52215661669. The reversal of 52215661654 is 45616651225.

It is a self number, because there is not a number n which added to its sum of digits gives 52215661654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215661651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453697 + ... + 557020.

It is an arithmetic number, because the mean of its divisors is an integer number (5274431883).

Almost surely, 2^52215661654 is an apocalyptic number.

52215661654 is a deficient number, since it is larger than the sum of its proper divisors (32175248474).

52215661654 is a wasteful number, since it uses less digits than its factorization.

52215661654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012719.

The product of its digits is 432000, while the sum is 43.

The spelling of 52215661654 in words is "fifty-two billion, two hundred fifteen million, six hundred sixty-one thousand, six hundred fifty-four".