87510252621 has 16 divisors (see below), whose sum is σ = 127614876480. Its totient is φ = 52900168320.

The previous prime is 87510252581. The next prime is 87510252629. The reversal of 87510252621 is 12625201578.

It is not a de Polignac number, because 87510252621 - 2¹¹ = 87510250573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87510252621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87510252629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3395680 + ... + 3421353.

It is an arithmetic number, because the mean of its divisors is an integer number (7975929780).

Almost surely, 2^87510252621 is an apocalyptic number.

It is an amenable number.

87510252621 is a deficient number, since it is larger than the sum of its proper divisors (40104623859).

87510252621 is a wasteful number, since it uses less digits than its factorization.

87510252621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817436.

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 87510252621 in words is "eighty-seven billion, five hundred ten million, two hundred fifty-two thousand, six hundred twenty-one".