51011105601 has 8 divisors (see below), whose sum is σ = 68016129664. Its totient is φ = 34006742640.

The previous prime is 51011105597. The next prime is 51011105609. The reversal of 51011105601 is 10650111015.

It is a happy number.

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

It is not a de Polignac number, because 51011105601 - 2² = 51011105597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51011105609) 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, 57771 + ... + 324591.

It is an arithmetic number, because the mean of its divisors is an integer number (8502016208).

Almost surely, 2^51011105601 is an apocalyptic number.

It is an amenable number.

51011105601 is a deficient number, since it is larger than the sum of its proper divisors (17005024063).

51011105601 is a wasteful number, since it uses less digits than its factorization.

51011105601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330551.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 51011105601 its reverse (10650111015), we get a palindrome (61661216616).

The spelling of 51011105601 in words is "fifty-one billion, eleven million, one hundred five thousand, six hundred one".