84987597501 has 6 divisors (see below), whose sum is σ = 122759863070. Its totient is φ = 56658398328.

The previous prime is 84987597473. The next prime is 84987597517. The reversal of 84987597501 is 10579578948.

84987597501 is a `hidden beast` number, since 8 + 49 + 87 + 5 + 9 + 7 + 501 = 666.

It can be written as a sum of positive squares in only one way, i.e., 82616004900 + 2371592601 = 287430^2 + 48699^2 .

It is not a de Polignac number, because 84987597501 - 2⁵ = 84987597469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84987597521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4721533186 + ... + 4721533203.

Almost surely, 2^84987597501 is an apocalyptic number.

It is an amenable number.

84987597501 is a deficient number, since it is larger than the sum of its proper divisors (37772265569).

84987597501 is a wasteful number, since it uses less digits than its factorization.

84987597501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9443066395 (or 9443066392 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 63.

It can be divided in two parts, 849875 and 97501, that added together give a triangular number (947376 = T₁₃₇₆).

The spelling of 84987597501 in words is "eighty-four billion, nine hundred eighty-seven million, five hundred ninety-seven thousand, five hundred one".