51611721710 has 32 divisors (see below), whose sum is σ = 100221846912. Its totient is φ = 19063682560.

The previous prime is 51611721697. The next prime is 51611721823. The reversal of 51611721710 is 1712711615.

51611721710 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2855126 + ... + 2873145.

It is an arithmetic number, because the mean of its divisors is an integer number (3131932716).

Almost surely, 2^51611721710 is an apocalyptic number.

51611721710 is a deficient number, since it is larger than the sum of its proper divisors (48610125202).

51611721710 is a wasteful number, since it uses less digits than its factorization.

51611721710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728348.

The product of its (nonzero) digits is 2940, while the sum is 32.

The spelling of 51611721710 in words is "fifty-one billion, six hundred eleven million, seven hundred twenty-one thousand, seven hundred ten".