28917617151 has 24 divisors (see below), whose sum is σ = 41010656400. Its totient is φ = 18121188352.

The previous prime is 28917617147. The next prime is 28917617159. The reversal of 28917617151 is 15171671982.

It is not a de Polignac number, because 28917617151 - 2² = 28917617147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28917617151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28917617159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 670075 + ... + 711923.

It is an arithmetic number, because the mean of its divisors is an integer number (1708777350).

Almost surely, 2^28917617151 is an apocalyptic number.

28917617151 is a deficient number, since it is larger than the sum of its proper divisors (12093039249).

28917617151 is a wasteful number, since it uses less digits than its factorization.

28917617151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42683 (or 42666 counting only the distinct ones).

The product of its digits is 211680, while the sum is 48.

The spelling of 28917617151 in words is "twenty-eight billion, nine hundred seventeen million, six hundred seventeen thousand, one hundred fifty-one".