42567953761 has 4 divisors (see below), whose sum is σ = 44808372400. Its totient is φ = 40327535124.

The previous prime is 42567953741. The next prime is 42567953773. The reversal of 42567953761 is 16735976524.

It is a happy number.

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 not a de Polignac number, because 42567953761 - 2¹⁹ = 42567429473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42567953741) 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, 1120209291 + ... + 1120209328.

It is an arithmetic number, because the mean of its divisors is an integer number (11202093100).

Almost surely, 2^42567953761 is an apocalyptic number.

It is an amenable number.

42567953761 is a deficient number, since it is larger than the sum of its proper divisors (2240418639).

42567953761 is a wasteful number, since it uses less digits than its factorization.

42567953761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240418638.

The product of its digits is 9525600, while the sum is 55.

The spelling of 42567953761 in words is "forty-two billion, five hundred sixty-seven million, nine hundred fifty-three thousand, seven hundred sixty-one".