16451507140437 has 4 divisors (see below), whose sum is σ = 21935342853920. Its totient is φ = 10967671426956.

The previous prime is 16451507140429. The next prime is 16451507140451. The reversal of 16451507140437 is 73404170515461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16451507140437 - 2³ = 16451507140429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16451507140457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2741917856737 + ... + 2741917856742.

It is an arithmetic number, because the mean of its divisors is an integer number (5483835713480).

Almost surely, 2^{16451507140437} is an apocalyptic number.

It is an amenable number.

16451507140437 is a deficient number, since it is larger than the sum of its proper divisors (5483835713483).

16451507140437 is an equidigital number, since it uses as much as digits as its factorization.

16451507140437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483835713482.

The product of its (nonzero) digits is 1411200, while the sum is 48.

Adding to 16451507140437 its reverse (73404170515461), we get a palindrome (89855677655898).

The spelling of 16451507140437 in words is "sixteen trillion, four hundred fifty-one billion, five hundred seven million, one hundred forty thousand, four hundred thirty-seven".