42015505550405 has 64 divisors (see below), whose sum is σ = 52318465056000. Its totient is φ = 32366803488768.

The previous prime is 42015505550387. The next prime is 42015505550407. The reversal of 42015505550405 is 50405550551024.

It is a cyclic number.

It is not a de Polignac number, because 42015505550405 - 2¹⁴ = 42015505534021 is a prime.

It is a super-2 number, since 2×42015505550405² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015505550407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6388244477 + ... + 6388251053.

It is an arithmetic number, because the mean of its divisors is an integer number (817476016500).

Almost surely, 2^{42015505550405} is an apocalyptic number.

It is an amenable number.

42015505550405 is a deficient number, since it is larger than the sum of its proper divisors (10302959505595).

42015505550405 is a wasteful number, since it uses less digits than its factorization.

42015505550405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686.

The product of its (nonzero) digits is 500000, while the sum is 41.

The spelling of 42015505550405 in words is "forty-two trillion, fifteen billion, five hundred five million, five hundred fifty thousand, four hundred five".