51497099168 has 12 divisors (see below), whose sum is σ = 101384914050. Its totient is φ = 25748549568.

The previous prime is 51497099161. The next prime is 51497099209. The reversal of 51497099168 is 86199079415.

It can be written as a sum of positive squares in only one way, i.e., 48036365584 + 3460733584 = 219172^2 + 58828^2 .

It is not an unprimeable number, because it can be changed into a prime (51497099161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804642143 + ... + 804642206.

Almost surely, 2^51497099168 is an apocalyptic number.

It is an amenable number.

51497099168 is a deficient number, since it is larger than the sum of its proper divisors (49887814882).

51497099168 is a wasteful number, since it uses less digits than its factorization.

51497099168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609284359 (or 1609284351 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 51497099168 in words is "fifty-one billion, four hundred ninety-seven million, ninety-nine thousand, one hundred sixty-eight".