42000515653 has 2 divisors, whose sum is σ = 42000515654. Its totient is φ = 42000515652.

The previous prime is 42000515629. The next prime is 42000515657. The reversal of 42000515653 is 35651500024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27357821604 + 14642694049 = 165402^2 + 121007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42000515653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42000515657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21000257826 + 21000257827.

It is an arithmetic number, because the mean of its divisors is an integer number (21000257827).

Almost surely, 2^42000515653 is an apocalyptic number.

It is an amenable number.

42000515653 is a deficient number, since it is larger than the sum of its proper divisors (1).

42000515653 is an equidigital number, since it uses as much as digits as its factorization.

42000515653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 42000515653 in words is "forty-two billion, five hundred fifteen thousand, six hundred fifty-three".