16126678457 has 4 divisors (see below), whose sum is σ = 16161509760. Its totient is φ = 16091847156.

The previous prime is 16126678439. The next prime is 16126678483. The reversal of 16126678457 is 75487662161.

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 a cyclic number.

It is not a de Polignac number, because 16126678457 - 2⁸ = 16126678201 is a prime.

It is a super-4 number, since 4×16126678457⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16126678399 and 16126678408.

It is not an unprimeable number, because it can be changed into a prime (16126678357) 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, 17414957 + ... + 17415882.

It is an arithmetic number, because the mean of its divisors is an integer number (4040377440).

Almost surely, 2^16126678457 is an apocalyptic number.

It is an amenable number.

16126678457 is a deficient number, since it is larger than the sum of its proper divisors (34831303).

16126678457 is an equidigital number, since it uses as much as digits as its factorization.

16126678457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34831302.

The product of its digits is 3386880, while the sum is 53.

The spelling of 16126678457 in words is "sixteen billion, one hundred twenty-six million, six hundred seventy-eight thousand, four hundred fifty-seven".