87540406527572 has 24 divisors (see below), whose sum is σ = 154139758244136. Its totient is φ = 43500667793408.

The previous prime is 87540406527571. The next prime is 87540406527577. The reversal of 87540406527572 is 27572560404578.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2800354577476 + 84740051950096 = 1673426^2 + 9205436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87540406527571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22200653 + ... + 25844724.

It is an arithmetic number, because the mean of its divisors is an integer number (6422489926839).

Almost surely, 2^{87540406527572} is an apocalyptic number.

It is an amenable number.

87540406527572 is a deficient number, since it is larger than the sum of its proper divisors (66599351716564).

87540406527572 is a wasteful number, since it uses less digits than its factorization.

87540406527572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48048187 (or 48048185 counting only the distinct ones).

The product of its (nonzero) digits is 131712000, while the sum is 62.

The spelling of 87540406527572 in words is "eighty-seven trillion, five hundred forty billion, four hundred six million, five hundred twenty-seven thousand, five hundred seventy-two".