31666626045120 has 448 divisors, whose sum is σ = 114620415123456. Its totient is φ = 7338686853120.

The previous prime is 31666626045107. The next prime is 31666626045151. The reversal of 31666626045120 is 2154062666613.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 31666626045120.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20599867 + ... + 22083653.

Almost surely, 2^{31666626045120} is an apocalyptic number.

31666626045120 is a gapful number since it is divisible by the number (30) 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 31666626045120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57310207561728).

31666626045120 is an abundant number, since it is smaller than the sum of its proper divisors (82953789078336).

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

31666626045120 is a wasteful number, since it uses less digits than its factorization.

31666626045120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483908 (or 1483898 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 31666626045120 in words is "thirty-one trillion, six hundred sixty-six billion, six hundred twenty-six million, forty-five thousand, one hundred twenty".