28771555293135 has 320 divisors, whose sum is σ = 54689475456000. Its totient is φ = 14450175387648.

The previous prime is 28771555293121. The next prime is 28771555293137. The reversal of 28771555293135 is 53139255517782.

28771555293135 is a `hidden beast` number, since 2 + 8 + 7 + 7 + 15 + 552 + 9 + 31 + 35 = 666.

It is not a de Polignac number, because 28771555293135 - 2¹⁶ = 28771555227599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28771555293137) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 49014574312 + ... + 49014574898.

It is an arithmetic number, because the mean of its divisors is an integer number (170904610800).

Almost surely, 2^{28771555293135} is an apocalyptic number.

28771555293135 is a deficient number, since it is larger than the sum of its proper divisors (25917920162865).

28771555293135 is a wasteful number, since it uses less digits than its factorization.

28771555293135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1203 counting only the distinct ones).

The product of its digits is 79380000, while the sum is 63.

The spelling of 28771555293135 in words is "twenty-eight trillion, seven hundred seventy-one billion, five hundred fifty-five million, two hundred ninety-three thousand, one hundred thirty-five".