94131855720 has 576 divisors, whose sum is σ = 367320517200. Its totient is φ = 20832215040.

The previous prime is 94131855707. The next prime is 94131855721. The reversal of 94131855720 is 2755813149.

94131855720 is a `hidden beast` number, since 9 + 41 + 31 + 8 + 5 + 572 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 11915468964 + 82216386756 = 109158^2 + 286734^2 .

It is a super-2 number, since 2×94131855720² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (94131855721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 113548266 + ... + 113549094.

Almost surely, 2^94131855720 is an apocalyptic number.

94131855720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 94131855720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183660258600).

94131855720 is an abundant number, since it is smaller than the sum of its proper divisors (273188661480).

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

94131855720 is a wasteful number, since it uses less digits than its factorization.

94131855720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 94131855720 in words is "ninety-four billion, one hundred thirty-one million, eight hundred fifty-five thousand, seven hundred twenty".