42861503655 has 24 divisors (see below), whose sum is σ = 74315562048. Its totient is φ = 22852610496.

The previous prime is 42861503627. The next prime is 42861503677. The reversal of 42861503655 is 55630516824.

42861503655 is a `hidden beast` number, since 4 + 2 + 86 + 1 + 503 + 65 + 5 = 666.

It is not a de Polignac number, because 42861503655 - 2¹⁰ = 42861502631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42861503655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10594 + ... + 292976.

It is an arithmetic number, because the mean of its divisors is an integer number (3096481752).

Almost surely, 2^42861503655 is an apocalyptic number.

42861503655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42861503655 is a deficient number, since it is larger than the sum of its proper divisors (31454058393).

42861503655 is a wasteful number, since it uses less digits than its factorization.

42861503655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285767 (or 285764 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 42861503655 in words is "forty-two billion, eight hundred sixty-one million, five hundred three thousand, six hundred fifty-five".