16541321653154 has 4 divisors (see below), whose sum is σ = 24811982479734. Its totient is φ = 8270660826576.

The previous prime is 16541321653147. The next prime is 16541321653217. The reversal of 16541321653154 is 45135612314561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15016578265129 + 1524743388025 = 3875123^2 + 1234805^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16541321653099 and 16541321653108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135330413287 + ... + 4135330413290.

Almost surely, 2^{16541321653154} is an apocalyptic number.

16541321653154 is a deficient number, since it is larger than the sum of its proper divisors (8270660826580).

16541321653154 is an equidigital number, since it uses as much as digits as its factorization.

16541321653154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270660826579.

The product of its digits is 1296000, while the sum is 47.

The spelling of 16541321653154 in words is "sixteen trillion, five hundred forty-one billion, three hundred twenty-one million, six hundred fifty-three thousand, one hundred fifty-four".