87785788575 has 24 divisors (see below), whose sum is σ = 146769958800. Its totient is φ = 46293026560.

The previous prime is 87785788543. The next prime is 87785788579. The reversal of 87785788575 is 57588758778.

It is not a de Polignac number, because 87785788575 - 2⁵ = 87785788543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a junction number, because it is equal to n+sod(n) for n = 87785788497 and 87785788506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87785788579) 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, 6569040 + ... + 6582389.

It is an arithmetic number, because the mean of its divisors is an integer number (6115414950).

Almost surely, 2^87785788575 is an apocalyptic number.

87785788575 is a deficient number, since it is larger than the sum of its proper divisors (58984170225).

87785788575 is a wasteful number, since it uses less digits than its factorization.

87785788575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151531 (or 13151526 counting only the distinct ones).

The product of its digits is 1229312000, while the sum is 75.

The spelling of 87785788575 in words is "eighty-seven billion, seven hundred eighty-five million, seven hundred eighty-eight thousand, five hundred seventy-five".