16513112712642 has 96 divisors (see below), whose sum is σ = 41897229292800. Its totient is φ = 4299978638592.

The previous prime is 16513112712589. The next prime is 16513112712643. The reversal of 16513112712642 is 24621721131561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 16513112712594 and 16513112712603.

It is not an unprimeable number, because it can be changed into a prime (16513112712643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27043267 + ... + 27647142.

It is an arithmetic number, because the mean of its divisors is an integer number (436429471800).

Almost surely, 2^{16513112712642} is an apocalyptic number.

16513112712642 is an abundant number, since it is smaller than the sum of its proper divisors (25384116580158).

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

16513112712642 is a wasteful number, since it uses less digits than its factorization.

16513112712642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54690520 (or 54690513 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The spelling of 16513112712642 in words is "sixteen trillion, five hundred thirteen billion, one hundred twelve million, seven hundred twelve thousand, six hundred forty-two".