3954815360661 has 16 divisors (see below), whose sum is σ = 5753254800960. Its totient is φ = 2396526088320.

The previous prime is 3954815360641. The next prime is 3954815360711. The reversal of 3954815360661 is 1660635184593.

It is not a de Polignac number, because 3954815360661 - 2²⁷ = 3954681142933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3954815360641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8050480 + ... + 8527593.

It is an arithmetic number, because the mean of its divisors is an integer number (359578425060).

Almost surely, 2^{3954815360661} is an apocalyptic number.

It is an amenable number.

3954815360661 is a deficient number, since it is larger than the sum of its proper divisors (1798439440299).

3954815360661 is a wasteful number, since it uses less digits than its factorization.

3954815360661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16585316.

The product of its (nonzero) digits is 13996800, while the sum is 57.

The spelling of 3954815360661 in words is "three trillion, nine hundred fifty-four billion, eight hundred fifteen million, three hundred sixty thousand, six hundred sixty-one".