51126220390 has 16 divisors (see below), whose sum is σ = 105173939232. Its totient is φ = 17528989824.

The previous prime is 51126220363. The next prime is 51126220403. The reversal of 51126220390 is 9302262115.

It is a super-2 number, since 2×51126220390² (a number of 22 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 7 ways as a sum of consecutive naturals, for example, 365187219 + ... + 365187358.

It is an arithmetic number, because the mean of its divisors is an integer number (6573371202).

Almost surely, 2^51126220390 is an apocalyptic number.

51126220390 is an abundant number, since it is smaller than the sum of its proper divisors (54047718842).

51126220390 is a wasteful number, since it uses less digits than its factorization.

51126220390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730374591.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 51126220390 in words is "fifty-one billion, one hundred twenty-six million, two hundred twenty thousand, three hundred ninety".