3954066044985 has 40 divisors (see below), whose sum is σ = 8100605151936. Its totient is φ = 1807573047840.

The previous prime is 3954066044953. The next prime is 3954066045031. The reversal of 3954066044985 is 5894406604593.

3954066044985 is a `hidden beast` number, since 3 + 9 + 54 + 0 + 6 + 60 + 449 + 85 = 666.

It is not a de Polignac number, because 3954066044985 - 2⁵ = 3954066044953 is a prime.

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 39 ways as a sum of consecutive naturals, for example, 697363311 + ... + 697368980.

Almost surely, 2^{3954066044985} is an apocalyptic number.

3954066044985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3954066044985 is an abundant number, since it is smaller than the sum of its proper divisors (4146539106951).

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

3954066044985 is a wasteful number, since it uses less digits than its factorization.

3954066044985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394732315 (or 1394732306 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 63.

The spelling of 3954066044985 in words is "three trillion, nine hundred fifty-four billion, sixty-six million, forty-four thousand, nine hundred eighty-five".