990486522870 has 64 divisors (see below), whose sum is σ = 2710616529600. Its totient is φ = 229470179328.

The previous prime is 990486522863. The next prime is 990486522871. The reversal of 990486522870 is 78225684099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990486522871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74690695 + ... + 74703954.

It is an arithmetic number, because the mean of its divisors is an integer number (42353383275).

Almost surely, 2^990486522870 is an apocalyptic number.

990486522870 is an abundant number, since it is smaller than the sum of its proper divisors (1720130006730).

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

990486522870 is a wasteful number, since it uses less digits than its factorization.

990486522870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149394689.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 990486522870 in words is "nine hundred ninety billion, four hundred eighty-six million, five hundred twenty-two thousand, eight hundred seventy".