2661521032 has 16 divisors (see below), whose sum is σ = 4998122640. Its totient is φ = 1328688336.

The previous prime is 2661520999. The next prime is 2661521047. The reversal of 2661521032 is 2301251662.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253558 + ... + 263845.

It is an arithmetic number, because the mean of its divisors is an integer number (312382665).

Almost surely, 2^2661521032 is an apocalyptic number.

It is an amenable number.

2661521032 is a deficient number, since it is larger than the sum of its proper divisors (2336601608).

2661521032 is a wasteful number, since it uses less digits than its factorization.

2661521032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518052 (or 518048 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2661521032 is about 51589.9314983069. The cubic root of 2661521032 is about 1385.8300284295.

Adding to 2661521032 its reverse (2301251662), we get a palindrome (4962772694).

The spelling of 2661521032 in words is "two billion, six hundred sixty-one million, five hundred twenty-one thousand, thirty-two".