28878614541 has 96 divisors (see below), whose sum is σ = 50545983488. Its totient is φ = 15539247360.

The previous prime is 28878614489. The next prime is 28878614543. The reversal of 28878614541 is 14541687882.

28878614541 is a `hidden beast` number, since 2 + 8 + 8 + 7 + 86 + 14 + 541 = 666.

It is not a de Polignac number, because 28878614541 - 2⁶ = 28878614477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28878614543) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30819825 + ... + 30820761.

Almost surely, 2^28878614541 is an apocalyptic number.

28878614541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28878614541 is a deficient number, since it is larger than the sum of its proper divisors (21667368947).

28878614541 is a wasteful number, since it uses less digits than its factorization.

28878614541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1388 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The spelling of 28878614541 in words is "twenty-eight billion, eight hundred seventy-eight million, six hundred fourteen thousand, five hundred forty-one".