51091676690 has 16 divisors (see below), whose sum is σ = 91972321560. Its totient is φ = 20435047680.

The previous prime is 51091676689. The next prime is 51091676707. The reversal of 51091676690 is 9667619015.

51091676690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46464820249 + 4626856441 = 215557^2 + 68021^2 .

It is a super-2 number, since 2×51091676690² (a number of 22 digits) contains 22 as substring.

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, 66281 + ... + 326460.

Almost surely, 2^51091676690 is an apocalyptic number.

51091676690 is a deficient number, since it is larger than the sum of its proper divisors (40880644870).

51091676690 is a wasteful number, since it uses less digits than its factorization.

51091676690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405757.

The product of its (nonzero) digits is 612360, while the sum is 50.

The spelling of 51091676690 in words is "fifty-one billion, ninety-one million, six hundred seventy-six thousand, six hundred ninety".