87850401121 has 6 divisors (see below), whose sum is σ = 102193323810. Its totient is φ = 75300343776.

The previous prime is 87850401113. The next prime is 87850401127. The reversal of 87850401121 is 12110405878.

It can be written as a sum of positive squares in only one way, i.e., 45358350625 + 42492050496 = 212975^2 + 206136^2 .

It is not a de Polignac number, because 87850401121 - 2³ = 87850401113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87850401127) 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, 896432616 + ... + 896432713.

It is an arithmetic number, because the mean of its divisors is an integer number (17032220635).

Almost surely, 2^87850401121 is an apocalyptic number.

It is an amenable number.

87850401121 is a deficient number, since it is larger than the sum of its proper divisors (14342922689).

87850401121 is a wasteful number, since it uses less digits than its factorization.

87850401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792865343 (or 1792865336 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

Adding to 87850401121 its reverse (12110405878), we get a palindrome (99960806999).

The spelling of 87850401121 in words is "eighty-seven billion, eight hundred fifty million, four hundred one thousand, one hundred twenty-one".