3912559725690 has 384 divisors, whose sum is σ = 13606078187520. Its totient is φ = 784963872000.

The previous prime is 3912559725673. The next prime is 3912559725703. The reversal of 3912559725690 is 965279552193.

3912559725690 is a `hidden beast` number, since 3 + 9 + 1 + 2 + 559 + 72 + 5 + 6 + 9 + 0 = 666.

It is a super-2 number, since 2×3912559725690² (a number of 26 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5065665 + ... + 5786715.

It is an arithmetic number, because the mean of its divisors is an integer number (35432495280).

Almost surely, 2^{3912559725690} is an apocalyptic number.

3912559725690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3912559725690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6803039093760).

3912559725690 is an abundant number, since it is smaller than the sum of its proper divisors (9693518461830).

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

3912559725690 is a wasteful number, since it uses less digits than its factorization.

3912559725690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721120 (or 721108 counting only the distinct ones).

The product of its (nonzero) digits is 45927000, while the sum is 63.

The spelling of 3912559725690 in words is "three trillion, nine hundred twelve billion, five hundred fifty-nine million, seven hundred twenty-five thousand, six hundred ninety".