51827695890 has 16 divisors (see below), whose sum is σ = 124386470208. Its totient is φ = 13820718896.

The previous prime is 51827695877. The next prime is 51827695891. The reversal of 51827695890 is 9859672815.

It is a super-2 number, since 2×51827695890² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51827695891) 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, 863794902 + ... + 863794961.

It is an arithmetic number, because the mean of its divisors is an integer number (7774154388).

Almost surely, 2^51827695890 is an apocalyptic number.

51827695890 is an abundant number, since it is smaller than the sum of its proper divisors (72558774318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51827695890 is a wasteful number, since it uses less digits than its factorization.

51827695890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727589873.

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 51827695890 in words is "fifty-one billion, eight hundred twenty-seven million, six hundred ninety-five thousand, eight hundred ninety".