2065400178512 has 40 divisors (see below), whose sum is σ = 4430661737952. Its totient is φ = 924806044800.

The previous prime is 2065400178487. The next prime is 2065400178547. The reversal of 2065400178512 is 2158710045602.

It is a self number, because there is not a number n which added to its sum of digits gives 2065400178512.

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, 87564539 + ... + 87588122.

Almost surely, 2^{2065400178512} is an apocalyptic number.

2065400178512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2065400178512 is an abundant number, since it is smaller than the sum of its proper divisors (2365261559440).

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

2065400178512 is a wasteful number, since it uses less digits than its factorization.

2065400178512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175152747 (or 175152741 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 2065400178512 in words is "two trillion, sixty-five billion, four hundred million, one hundred seventy-eight thousand, five hundred twelve".