4002561546 has 32 divisors (see below), whose sum is σ = 8466432000. Its totient is φ = 1257968880.

The previous prime is 4002561523. The next prime is 4002561547. The reversal of 4002561546 is 6451652004.

4002561546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (4002561547) 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, 59146 + ... + 107253.

It is an arithmetic number, because the mean of its divisors is an integer number (264576000).

Almost surely, 2^4002561546 is an apocalyptic number.

4002561546 is an abundant number, since it is smaller than the sum of its proper divisors (4463870454).

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

4002561546 is a wasteful number, since it uses less digits than its factorization.

4002561546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166634.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 4002561546 is about 63265.8007615489. The cubic root of 4002561546 is about 1587.7398297302.

The spelling of 4002561546 in words is "four billion, two million, five hundred sixty-one thousand, five hundred forty-six".