16401640152540 has 48 divisors (see below), whose sum is σ = 45934174829088. Its totient is φ = 4372858097664.

The previous prime is 16401640152539. The next prime is 16401640152553. The reversal of 16401640152540 is 4525104610461.

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, 28229077 + ... + 28804236.

It is an arithmetic number, because the mean of its divisors is an integer number (956961975606).

Almost surely, 2^{16401640152540} is an apocalyptic number.

16401640152540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16401640152540 is an abundant number, since it is smaller than the sum of its proper divisors (29532534676548).

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

16401640152540 is a wasteful number, since it uses less digits than its factorization.

16401640152540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57038118 (or 57038116 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 16401640152540 in words is "sixteen trillion, four hundred one billion, six hundred forty million, one hundred fifty-two thousand, five hundred forty".