1788451852656 has 40 divisors (see below), whose sum is σ = 5280191185024. Its totient is φ = 510986243520.

The previous prime is 1788451852597. The next prime is 1788451852661. The reversal of 1788451852656 is 6562581548871.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661386350 + ... + 2661387021.

Almost surely, 2^{1788451852656} is an apocalyptic number.

1788451852656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1788451852656 is an abundant number, since it is smaller than the sum of its proper divisors (3491739332368).

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

1788451852656 is a wasteful number, since it uses less digits than its factorization.

1788451852656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322773389 (or 5322773383 counting only the distinct ones).

The product of its digits is 129024000, while the sum is 66.

The spelling of 1788451852656 in words is "one trillion, seven hundred eighty-eight billion, four hundred fifty-one million, eight hundred fifty-two thousand, six hundred fifty-six".