14920147947 has 4 divisors (see below), whose sum is σ = 19893530600. Its totient is φ = 9946765296.

The previous prime is 14920147943. The next prime is 14920147961. The reversal of 14920147947 is 74974102941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74974102941 = 3 ⋅24991367647.

It is not a de Polignac number, because 14920147947 - 2² = 14920147943 is a prime.

It is a super-2 number, since 2×14920147947² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14920147896 and 14920147905.

It is not an unprimeable number, because it can be changed into a prime (14920147943) 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, 2486691322 + ... + 2486691327.

It is an arithmetic number, because the mean of its divisors is an integer number (4973382650).

Almost surely, 2^14920147947 is an apocalyptic number.

14920147947 is a deficient number, since it is larger than the sum of its proper divisors (4973382653).

14920147947 is an equidigital number, since it uses as much as digits as its factorization.

14920147947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973382652.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 14920147947 in words is "fourteen billion, nine hundred twenty million, one hundred forty-seven thousand, nine hundred forty-seven".