42015641501 has 2 divisors, whose sum is σ = 42015641502. Its totient is φ = 42015641500.

The previous prime is 42015641441. The next prime is 42015641513. The reversal of 42015641501 is 10514651024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26372136025 + 15643505476 = 162395^2 + 125074^2 .

It is a cyclic number.

It is not a de Polignac number, because 42015641501 - 2¹⁰ = 42015640477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42015611501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007820750 + 21007820751.

It is an arithmetic number, because the mean of its divisors is an integer number (21007820751).

Almost surely, 2^42015641501 is an apocalyptic number.

It is an amenable number.

42015641501 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015641501 is an equidigital number, since it uses as much as digits as its factorization.

42015641501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 42015641501 in words is "forty-two billion, fifteen million, six hundred forty-one thousand, five hundred one".