490516154724978 has 32 divisors (see below), whose sum is σ = 1090036937565120. Its totient is φ = 163505229181920.

The previous prime is 490516154724977. The next prime is 490516154725019. The reversal of 490516154724978 is 879427451615094.

It is a happy number.

490516154724978 is a `hidden beast` number, since 4 + 9 + 0 + 5 + 1 + 6 + 1 + 547 + 2 + 4 + 9 + 78 = 666.

It is a super-2 number, since 2×490516154724978² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490516154724977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62315613 + ... + 69744303.

It is an arithmetic number, because the mean of its divisors is an integer number (34063654298910).

Almost surely, 2^{490516154724978} is an apocalyptic number.

490516154724978 is an abundant number, since it is smaller than the sum of its proper divisors (599520782840142).

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

490516154724978 is a wasteful number, since it uses less digits than its factorization.

490516154724978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651479 (or 8651473 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 72.

The spelling of 490516154724978 in words is "four hundred ninety trillion, five hundred sixteen billion, one hundred fifty-four million, seven hundred twenty-four thousand, nine hundred seventy-eight".