42015511451 has 2 divisors, whose sum is σ = 42015511452. Its totient is φ = 42015511450.

The previous prime is 42015511409. The next prime is 42015511459. The reversal of 42015511451 is 15411551024.

42015511451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42015511451 - 2¹⁸ = 42015249307 is a prime.

It is a super-2 number, since 2×42015511451² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42015511459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007755725 + 21007755726.

It is an arithmetic number, because the mean of its divisors is an integer number (21007755726).

Almost surely, 2^42015511451 is an apocalyptic number.

42015511451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015511451 is an equidigital number, since it uses as much as digits as its factorization.

42015511451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 42015511451 in words is "forty-two billion, fifteen million, five hundred eleven thousand, four hundred fifty-one".