165411436540 has 48 divisors (see below), whose sum is σ = 399180809664. Its totient is φ = 56399155200.

The previous prime is 165411436523. The next prime is 165411436591. The reversal of 165411436540 is 45634114561.

It is a junction number, because it is equal to n+sod(n) for n = 165411436493 and 165411436502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3238501 + ... + 3289180.

It is an arithmetic number, because the mean of its divisors is an integer number (8316266868).

Almost surely, 2^165411436540 is an apocalyptic number.

165411436540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165411436540 is an abundant number, since it is smaller than the sum of its proper divisors (233769373124).

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

165411436540 is a wasteful number, since it uses less digits than its factorization.

165411436540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527878 (or 6527876 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 165411436540 in words is "one hundred sixty-five billion, four hundred eleven million, four hundred thirty-six thousand, five hundred forty".