42950286504581 has 4 divisors (see below), whose sum is σ = 44335779617664. Its totient is φ = 41564793391500.

The previous prime is 42950286504553. The next prime is 42950286504661. The reversal of 42950286504581 is 18540568205924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42950286504581 is a prime.

It is a super-2 number, since 2×42950286504581² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42950286504581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42950286504781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692746556495 + ... + 692746556556.

It is an arithmetic number, because the mean of its divisors is an integer number (11083944904416).

Almost surely, 2^{42950286504581} is an apocalyptic number.

It is an amenable number.

42950286504581 is a deficient number, since it is larger than the sum of its proper divisors (1385493113083).

42950286504581 is a wasteful number, since it uses less digits than its factorization.

42950286504581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385493113082.

The product of its (nonzero) digits is 27648000, while the sum is 59.

The spelling of 42950286504581 in words is "forty-two trillion, nine hundred fifty billion, two hundred eighty-six million, five hundred four thousand, five hundred eighty-one".