42077869369 has 4 divisors (see below), whose sum is σ = 42079287796. Its totient is φ = 42076450944.

The previous prime is 42077869333. The next prime is 42077869373. The reversal of 42077869369 is 96396877024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36662675625 + 5415193744 = 191475^2 + 73588^2 .

It is a cyclic number.

It is not a de Polignac number, because 42077869369 - 2¹⁹ = 42077345081 is a prime.

It is a super-2 number, since 2×42077869369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42077863369) 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, 663744 + ... + 724369.

It is an arithmetic number, because the mean of its divisors is an integer number (10519821949).

Almost surely, 2^42077869369 is an apocalyptic number.

It is an amenable number.

42077869369 is a deficient number, since it is larger than the sum of its proper divisors (1418427).

42077869369 is a wasteful number, since it uses less digits than its factorization.

42077869369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418426.

The product of its (nonzero) digits is 27433728, while the sum is 61.

The spelling of 42077869369 in words is "forty-two billion, seventy-seven million, eight hundred sixty-nine thousand, three hundred sixty-nine".