12037628521 has 2 divisors, whose sum is σ = 12037628522. Its totient is φ = 12037628520.

The previous prime is 12037628483. The next prime is 12037628557. The reversal of 12037628521 is 12582673021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11334583296 + 703045225 = 106464^2 + 26515^2 .

It is a cyclic number.

It is not a de Polignac number, because 12037628521 - 2¹⁵ = 12037595753 is a prime.

It is not a weakly prime, because it can be changed into another prime (12037628221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6018814260 + 6018814261.

It is an arithmetic number, because the mean of its divisors is an integer number (6018814261).

Almost surely, 2^12037628521 is an apocalyptic number.

It is an amenable number.

12037628521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12037628521 is an equidigital number, since it uses as much as digits as its factorization.

12037628521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 12037628521 in words is "twelve billion, thirty-seven million, six hundred twenty-eight thousand, five hundred twenty-one".