42762781655 has 16 divisors (see below), whose sum is σ = 56503557504. Its totient is φ = 30809544480.

The previous prime is 42762781651. The next prime is 42762781669. The reversal of 42762781655 is 55618726724.

It is not a de Polignac number, because 42762781655 - 2² = 42762781651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42762781597 and 42762781606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42762781651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3627317 + ... + 3639086.

It is an arithmetic number, because the mean of its divisors is an integer number (3531472344).

Almost surely, 2^42762781655 is an apocalyptic number.

42762781655 is a deficient number, since it is larger than the sum of its proper divisors (13740775849).

42762781655 is a wasteful number, since it uses less digits than its factorization.

42762781655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266526.

The product of its digits is 5644800, while the sum is 53.

The spelling of 42762781655 in words is "forty-two billion, seven hundred sixty-two million, seven hundred eighty-one thousand, six hundred fifty-five".