17747920954 has 4 divisors (see below), whose sum is σ = 26621881434. Its totient is φ = 8873960476.

The previous prime is 17747920913. The next prime is 17747920991. The reversal of 17747920954 is 45902974771.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45902974771 = 29 ⋅1582861199.

It can be written as a sum of positive squares in only one way, i.e., 15169617225 + 2578303729 = 123165^2 + 50777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 17747920895 and 17747920904.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4436980237 + ... + 4436980240.

Almost surely, 2^17747920954 is an apocalyptic number.

17747920954 is a deficient number, since it is larger than the sum of its proper divisors (8873960480).

17747920954 is an equidigital number, since it uses as much as digits as its factorization.

17747920954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8873960479.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 17747920954 in words is "seventeen billion, seven hundred forty-seven million, nine hundred twenty thousand, nine hundred fifty-four".