16154009261540 has 12 divisors (see below), whose sum is σ = 33923419449276. Its totient is φ = 6461603704608.

The previous prime is 16154009261477. The next prime is 16154009261557. The reversal of 16154009261540 is 4516290045161.

It can be written as a sum of positive squares in 2 ways, for example, as 9888609787456 + 6265399474084 = 3144616^2 + 2503078^2 .

It is a super-2 number, since 2×16154009261540² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16154009261491 and 16154009261500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403850231519 + ... + 403850231558.

It is an arithmetic number, because the mean of its divisors is an integer number (2826951620773).

Almost surely, 2^{16154009261540} is an apocalyptic number.

16154009261540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16154009261540 is an abundant number, since it is smaller than the sum of its proper divisors (17769410187736).

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

16154009261540 is a wasteful number, since it uses less digits than its factorization.

16154009261540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807700463086 (or 807700463084 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 16154009261540 in words is "sixteen trillion, one hundred fifty-four billion, nine million, two hundred sixty-one thousand, five hundred forty".