490516159724978 has 8 divisors (see below), whose sum is σ = 735774334971420. Its totient is φ = 245258048067840.

The previous prime is 490516159724933. The next prime is 490516159724989. The reversal of 490516159724978 is 879427951615094.

It can be written as a sum of positive squares in 2 ways, for example, as 466690602738529 + 23825556986449 = 21603023^2 + 4881143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×490516159724978² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 490516159724899 and 490516159724908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17014598 + ... + 35644478.

Almost surely, 2^{490516159724978} is an apocalyptic number.

490516159724978 is a deficient number, since it is larger than the sum of its proper divisors (245258175246442).

490516159724978 is a wasteful number, since it uses less digits than its factorization.

490516159724978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31794652.

The product of its (nonzero) digits is 1371686400, while the sum is 77.

The spelling of 490516159724978 in words is "four hundred ninety trillion, five hundred sixteen billion, one hundred fifty-nine million, seven hundred twenty-four thousand, nine hundred seventy-eight".