46471638978 has 30 divisors (see below), whose sum is σ = 104137043241. Its totient is φ = 15489631728.

The previous prime is 46471638977. The next prime is 46471639001. The reversal of 46471638978 is 87983617464.

46471638978 is a `hidden beast` number, since 46 + 471 + 6 + 38 + 97 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45354943089 + 1116695889 = 212967^2 + 33417^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=152433.

It is a super-2 number, since 2×46471638978² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (46471638973) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2735326 + ... + 2752262.

Almost surely, 2^46471638978 is an apocalyptic number.

46471638978 is an abundant number, since it is smaller than the sum of its proper divisors (57665404263).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

46471638978 is an frugal number, since it uses more digits than its factorization.

46471638978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33888 (or 16942 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 46471638978 in words is "forty-six billion, four hundred seventy-one million, six hundred thirty-eight thousand, nine hundred seventy-eight".