10417921978 has 16 divisors (see below), whose sum is σ = 16045051176. Its totient is φ = 5070159360.

The previous prime is 10417921957. The next prime is 10417921993. The reversal of 10417921978 is 87912971401.

It can be written as a sum of positive squares in 4 ways, for example, as 6895143369 + 3522778609 = 83037^2 + 59353^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111201 + ... + 182212.

Almost surely, 2^10417921978 is an apocalyptic number.

10417921978 is a deficient number, since it is larger than the sum of its proper divisors (5627129198).

10417921978 is a wasteful number, since it uses less digits than its factorization.

10417921978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293889.

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 10417921978 in words is "ten billion, four hundred seventeen million, nine hundred twenty-one thousand, nine hundred seventy-eight".