4651661541 has 16 divisors (see below), whose sum is σ = 6264334080. Its totient is φ = 3070200000.

The previous prime is 4651661537. The next prime is 4651661593. The reversal of 4651661541 is 1451661564.

It is a happy number.

It is not a de Polignac number, because 4651661541 - 2² = 4651661537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4651661541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4651661501) 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, 105291 + ... + 142791.

It is an arithmetic number, because the mean of its divisors is an integer number (391520880).

Almost surely, 2^4651661541 is an apocalyptic number.

It is an amenable number.

4651661541 is a deficient number, since it is larger than the sum of its proper divisors (1612672539).

4651661541 is a wasteful number, since it uses less digits than its factorization.

4651661541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37916.

The product of its digits is 86400, while the sum is 39.

The square root of 4651661541 is about 68203.0904065204. The cubic root of 4651661541 is about 1669.3063131838.

The spelling of 4651661541 in words is "four billion, six hundred fifty-one million, six hundred sixty-one thousand, five hundred forty-one".