2151521616032 has 12 divisors (see below), whose sum is σ = 4235808181626. Its totient is φ = 1075760808000.

The previous prime is 2151521615989. The next prime is 2151521616053. The reversal of 2151521616032 is 2306161251512.

It can be written as a sum of positive squares in only one way, i.e., 1084672258576 + 1066849357456 = 1041476^2 + 1032884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2151521615983 and 2151521616001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33617525219 + ... + 33617525282.

Almost surely, 2^{2151521616032} is an apocalyptic number.

It is an amenable number.

2151521616032 is a deficient number, since it is larger than the sum of its proper divisors (2084286565594).

2151521616032 is an equidigital number, since it uses as much as digits as its factorization.

2151521616032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67235050511 (or 67235050503 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 2151521616032 its reverse (2306161251512), we get a palindrome (4457682867544).

The spelling of 2151521616032 in words is "two trillion, one hundred fifty-one billion, five hundred twenty-one million, six hundred sixteen thousand, thirty-two".