985785511631004 has 96 divisors (see below), whose sum is σ = 2921908478720000. Its totient is φ = 281550546198720.

The previous prime is 985785511630981. The next prime is 985785511631033. The reversal of 985785511631004 is 400136115587589.

It is a happy number.

985785511631004 is a `hidden beast` number, since 9 + 8 + 5 + 7 + 8 + 5 + 511 + 6 + 3 + 100 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235089652 + ... + 239246139.

Almost surely, 2^{985785511631004} is an apocalyptic number.

It is an amenable number.

985785511631004 is an abundant number, since it is smaller than the sum of its proper divisors (1936122967088996).

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

985785511631004 is a wasteful number, since it uses less digits than its factorization.

985785511631004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474338560 (or 474338552 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 63.

The spelling of 985785511631004 in words is "nine hundred eighty-five trillion, seven hundred eighty-five billion, five hundred eleven million, six hundred thirty-one thousand, four".