87442375371531 has 16 divisors (see below), whose sum is σ = 116633143200000. Its totient is φ = 58273266246048.

The previous prime is 87442375371523. The next prime is 87442375371539. The reversal of 87442375371531 is 13517357324478.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87442375371523) and next prime (87442375371539).

It is not a de Polignac number, because 87442375371531 - 2³ = 87442375371523 is a prime.

It is a super-2 number, since 2×87442375371531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87442375371539) 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, 87520660 + ... + 88514126.

It is an arithmetic number, because the mean of its divisors is an integer number (7289571450000).

Almost surely, 2^{87442375371531} is an apocalyptic number.

87442375371531 is a deficient number, since it is larger than the sum of its proper divisors (29190767828469).

87442375371531 is a wasteful number, since it uses less digits than its factorization.

87442375371531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004338.

The product of its digits is 59270400, while the sum is 60.

The spelling of 87442375371531 in words is "eighty-seven trillion, four hundred forty-two billion, three hundred seventy-five million, three hundred seventy-one thousand, five hundred thirty-one".