51266661055 has 8 divisors (see below), whose sum is σ = 61614208512. Its totient is φ = 40950518688.

The previous prime is 51266661037. The next prime is 51266661157. The reversal of 51266661055 is 55016666215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51266661055 - 2¹¹ = 51266659007 is a prime.

It is a Duffinian 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, 7847679 + ... + 7854208.

It is an arithmetic number, because the mean of its divisors is an integer number (7701776064).

Almost surely, 2^51266661055 is an apocalyptic number.

51266661055 is a deficient number, since it is larger than the sum of its proper divisors (10347547457).

51266661055 is a wasteful number, since it uses less digits than its factorization.

51266661055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15702545.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 51266661055 in words is "fifty-one billion, two hundred sixty-six million, six hundred sixty-one thousand, fifty-five".