42115551445013 has 2 divisors, whose sum is σ = 42115551445014. Its totient is φ = 42115551445012.

The previous prime is 42115551444949. The next prime is 42115551445063. The reversal of 42115551445013 is 31054415551124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25613700756004 + 16501850689009 = 5060998^2 + 4062247^2 .

It is a cyclic number.

It is not a de Polignac number, because 42115551445013 - 2⁶ = 42115551444949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42115551445063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21057775722506 + 21057775722507.

It is an arithmetic number, because the mean of its divisors is an integer number (21057775722507).

Almost surely, 2^{42115551445013} is an apocalyptic number.

It is an amenable number.

42115551445013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42115551445013 is an equidigital number, since it uses as much as digits as its factorization.

42115551445013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240000, while the sum is 41.

Adding to 42115551445013 its reverse (31054415551124), we get a palindrome (73169966996137).

The spelling of 42115551445013 in words is "forty-two trillion, one hundred fifteen billion, five hundred fifty-one million, four hundred forty-five thousand, thirteen".