1031666613120 has 2048 divisors, whose sum is σ = 4663733760000. Its totient is φ = 211628851200.

The previous prime is 1031666613101. The next prime is 1031666613121. The reversal of 1031666613120 is 213166661301.

It is a super-2 number, since 2×1031666613120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031666613121) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1722314581 + ... + 1722315179.

It is an arithmetic number, because the mean of its divisors is an integer number (2277213750).

Almost surely, 2^{1031666613120} is an apocalyptic number.

1031666613120 is a gapful number since it is divisible by the number (10) 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 1031666613120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331866880000).

1031666613120 is an abundant number, since it is smaller than the sum of its proper divisors (3632067146880).

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

1031666613120 is a wasteful number, since it uses less digits than its factorization.

1031666613120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 1031666613120 in words is "one trillion, thirty-one billion, six hundred sixty-six million, six hundred thirteen thousand, one hundred twenty".