87521495380 has 48 divisors (see below), whose sum is σ = 200583734400. Its totient is φ = 31813308800.

The previous prime is 87521495353. The next prime is 87521495381. The reversal of 87521495380 is 8359412578.

It is a happy number.

It is a super-2 number, since 2×87521495380² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87521495381) 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, 482745 + ... + 638815.

It is an arithmetic number, because the mean of its divisors is an integer number (4178827800).

Almost surely, 2^87521495380 is an apocalyptic number.

It is an amenable number.

87521495380 is an abundant number, since it is smaller than the sum of its proper divisors (113062239020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87521495380 is a wasteful number, since it uses less digits than its factorization.

87521495380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158640 (or 158638 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 87521495380 in words is "eighty-seven billion, five hundred twenty-one million, four hundred ninety-five thousand, three hundred eighty".