87372856922 has 16 divisors (see below), whose sum is σ = 141150977352. Its totient is φ = 40323017280.

The previous prime is 87372856913. The next prime is 87372856927. The reversal of 87372856922 is 22965827378.

It is a Cunningham number, because it is equal to 295589²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 57792640801 + 29580216121 = 240401^2 + 171989^2 .

It is a super-2 number, since 2×87372856922² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87372856927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268472 + ... + 496812.

Almost surely, 2^87372856922 is an apocalyptic number.

87372856922 is a deficient number, since it is larger than the sum of its proper divisors (53778120430).

87372856922 is a wasteful number, since it uses less digits than its factorization.

87372856922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243073.

The product of its digits is 20321280, while the sum is 59.

The spelling of 87372856922 in words is "eighty-seven billion, three hundred seventy-two million, eight hundred fifty-six thousand, nine hundred twenty-two".