51106420322990 has 64 divisors (see below), whose sum is σ = 95242324801536. Its totient is φ = 19732189669632.

The previous prime is 51106420322989. The next prime is 51106420323071. The reversal of 51106420322990 is 9922302460115.

It is a happy number.

It is a super-2 number, since 2×51106420322990² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604602869 + ... + 604687391.

It is an arithmetic number, because the mean of its divisors is an integer number (1488161325024).

Almost surely, 2^{51106420322990} is an apocalyptic number.

51106420322990 is a deficient number, since it is larger than the sum of its proper divisors (44135904478546).

51106420322990 is a wasteful number, since it uses less digits than its factorization.

51106420322990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102273.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 51106420322990 in words is "fifty-one trillion, one hundred six billion, four hundred twenty million, three hundred twenty-two thousand, nine hundred ninety".