24997416978 has 16 divisors (see below), whose sum is σ = 50489833536. Its totient is φ = 8249972400.

The previous prime is 24997416971. The next prime is 24997416979. The reversal of 24997416978 is 87961479942.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (24997416971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20624326 + ... + 20625537.

It is an arithmetic number, because the mean of its divisors is an integer number (3155614596).

Almost surely, 2^24997416978 is an apocalyptic number.

24997416978 is an abundant number, since it is smaller than the sum of its proper divisors (25492416558).

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

24997416978 is a wasteful number, since it uses less digits than its factorization.

24997416978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41249969.

The product of its digits is 54867456, while the sum is 66.

The spelling of 24997416978 in words is "twenty-four billion, nine hundred ninety-seven million, four hundred sixteen thousand, nine hundred seventy-eight".