4077506561 has 8 divisors (see below), whose sum is σ = 4102483080. Its totient is φ = 4052570112.

The previous prime is 4077506557. The next prime is 4077506599. The reversal of 4077506561 is 1656057704.

It can be written as a sum of positive squares in 4 ways, for example, as 115433536 + 3962073025 = 10744^2 + 62945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4077506561 - 2² = 4077506557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4077506551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208541 + ... + 227253.

It is an arithmetic number, because the mean of its divisors is an integer number (512810385).

Almost surely, 2^4077506561 is an apocalyptic number.

It is an amenable number.

4077506561 is a deficient number, since it is larger than the sum of its proper divisors (24976519).

4077506561 is a wasteful number, since it uses less digits than its factorization.

4077506561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20035.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 4077506561 is about 63855.3565568308. The cubic root of 4077506561 is about 1597.5883669728.

The spelling of 4077506561 in words is "four billion, seventy-seven million, five hundred six thousand, five hundred sixty-one".