1427122018665 has 48 divisors (see below), whose sum is σ = 2892806387328. Its totient is φ = 637226569728.

The previous prime is 1427122018661. The next prime is 1427122018691. The reversal of 1427122018665 is 5668102217241.

1427122018665 is a `hidden beast` number, since 1 + 427 + 12 + 201 + 8 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 1427122018665 - 2² = 1427122018661 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 1427122018665.

It is not an unprimeable number, because it can be changed into a prime (1427122018661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52667224 + ... + 52694313.

It is an arithmetic number, because the mean of its divisors is an integer number (60266799736).

Almost surely, 2^{1427122018665} is an apocalyptic number.

1427122018665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1427122018665 is an abundant number, since it is smaller than the sum of its proper divisors (1465684368663).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1427122018665 is a wasteful number, since it uses less digits than its factorization.

1427122018665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105361598 (or 105361595 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 1427122018665 in words is "one trillion, four hundred twenty-seven billion, one hundred twenty-two million, eighteen thousand, six hundred sixty-five".