4215761649 has 12 divisors (see below), whose sum is σ = 6643018512. Its totient is φ = 2555007000.

The previous prime is 4215761623. The next prime is 4215761651. The reversal of 4215761649 is 9461675124.

4215761649 is a `hidden beast` number, since 4 + 21 + 5 + 7 + 616 + 4 + 9 = 666.

4215761649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4215761649 - 2⁵ = 4215761617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4215761699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21291627 + ... + 21291824.

It is an arithmetic number, because the mean of its divisors is an integer number (553584876).

Almost surely, 2^4215761649 is an apocalyptic number.

It is an amenable number.

4215761649 is a deficient number, since it is larger than the sum of its proper divisors (2427256863).

4215761649 is a wasteful number, since it uses less digits than its factorization.

4215761649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42583468 (or 42583465 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 4215761649 is about 64928.8968718859. The cubic root of 4215761649 is about 1615.4444040231. Note that the first 4 decimals are identical.

The spelling of 4215761649 in words is "four billion, two hundred fifteen million, seven hundred sixty-one thousand, six hundred forty-nine".