51119620398 has 128 divisors (see below), whose sum is σ = 149961507840. Its totient is φ = 12496757760.

The previous prime is 51119620397. The next prime is 51119620417. The reversal of 51119620398 is 89302691115.

51119620398 is a `hidden beast` number, since 5 + 1 + 1 + 19 + 620 + 3 + 9 + 8 = 666.

It is a super-2 number, since 2×51119620398² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51119620397) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 290911 + ... + 432282.

It is an arithmetic number, because the mean of its divisors is an integer number (1171574280).

Almost surely, 2^51119620398 is an apocalyptic number.

51119620398 is an abundant number, since it is smaller than the sum of its proper divisors (98841887442).

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

51119620398 is a wasteful number, since it uses less digits than its factorization.

51119620398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723239 (or 723233 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 51119620398 in words is "fifty-one billion, one hundred nineteen million, six hundred twenty thousand, three hundred ninety-eight".