42722688990781 has 8 divisors (see below), whose sum is σ = 42938622837504. Its totient is φ = 42507140398080.

The previous prime is 42722688990769. The next prime is 42722688990799. The reversal of 42722688990781 is 18709988622724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42722688990781 - 2³⁹ = 42172933176893 is a prime.

It is a super-3 number, since 3×42722688990781³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42722688990881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96091155 + ... + 96534736.

It is an arithmetic number, because the mean of its divisors is an integer number (5367327854688).

Almost surely, 2^{42722688990781} is an apocalyptic number.

It is an amenable number.

42722688990781 is a deficient number, since it is larger than the sum of its proper divisors (215933846723).

42722688990781 is a wasteful number, since it uses less digits than its factorization.

42722688990781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192627011.

The product of its (nonzero) digits is 390168576, while the sum is 73.

The spelling of 42722688990781 in words is "forty-two trillion, seven hundred twenty-two billion, six hundred eighty-eight million, nine hundred ninety thousand, seven hundred eighty-one".