3861162172800 has 960 divisors, whose sum is σ = 15139331578800. Its totient is φ = 967200030720.

The previous prime is 3861162172799. The next prime is 3861162172859. The reversal of 3861162172800 is 82712611683.

3861162172800 is a `hidden beast` number, since 3 + 8 + 6 + 11 + 621 + 7 + 2 + 8 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 278114659 + ... + 278128541.

Almost surely, 2^{3861162172800} is an apocalyptic number.

3861162172800 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 3861162172800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7569665789400).

3861162172800 is an abundant number, since it is smaller than the sum of its proper divisors (11278169406000).

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

3861162172800 is a wasteful number, since it uses less digits than its factorization.

3861162172800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13985 (or 13959 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 3861162172800 in words is "three trillion, eight hundred sixty-one billion, one hundred sixty-two million, one hundred seventy-two thousand, eight hundred".