42855641828651 has 4 divisors (see below), whose sum is σ = 42856150241352. Its totient is φ = 42855133415952.

The previous prime is 42855641828569. The next prime is 42855641828669. The reversal of 42855641828651 is 15682814655824.

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

It is a cyclic number.

It is not a de Polignac number, because 42855641828651 - 2²⁶ = 42855574719787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42855641828551) 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, 254079890 + ... + 254248503.

It is an arithmetic number, because the mean of its divisors is an integer number (10714037560338).

Almost surely, 2^{42855641828651} is an apocalyptic number.

42855641828651 is a deficient number, since it is larger than the sum of its proper divisors (508412701).

42855641828651 is an equidigital number, since it uses as much as digits as its factorization.

42855641828651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508412700.

The product of its digits is 147456000, while the sum is 65.

The spelling of 42855641828651 in words is "forty-two trillion, eight hundred fifty-five billion, six hundred forty-one million, eight hundred twenty-eight thousand, six hundred fifty-one".