51219691010 has 16 divisors (see below), whose sum is σ = 92403567936. Its totient is φ = 20441626608.

The previous prime is 51219690997. The next prime is 51219691021. The reversal of 51219691010 is 1019691215.

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, 5776574 + ... + 5785433.

It is an arithmetic number, because the mean of its divisors is an integer number (5775222996).

Almost surely, 2^51219691010 is an apocalyptic number.

51219691010 is a deficient number, since it is larger than the sum of its proper divisors (41183876926).

51219691010 is a wasteful number, since it uses less digits than its factorization.

51219691010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11562457.

The product of its (nonzero) digits is 4860, while the sum is 35.

The spelling of 51219691010 in words is "fifty-one billion, two hundred nineteen million, six hundred ninety-one thousand, ten".