1851005027047 has 12 divisors (see below), whose sum is σ = 2141658711640. Its totient is φ = 1594167006960.

The previous prime is 1851005026961. The next prime is 1851005027057. The reversal of 1851005027047 is 7407205001581.

It is a de Polignac number, because none of the positive numbers 2^k-1851005027047 is a prime.

It is a super-2 number, since 2×1851005027047² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1851005027057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402565128 + ... + 402569725.

Almost surely, 2^{1851005027047} is an apocalyptic number.

1851005027047 is a deficient number, since it is larger than the sum of its proper divisors (290653684593).

1851005027047 is a wasteful number, since it uses less digits than its factorization.

1851005027047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805134894 (or 805134883 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 1851005027047 in words is "one trillion, eight hundred fifty-one billion, five million, twenty-seven thousand, forty-seven".