87572124061 has 2 divisors, whose sum is σ = 87572124062. Its totient is φ = 87572124060.

The previous prime is 87572123939. The next prime is 87572124103. The reversal of 87572124061 is 16042127578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53363772036 + 34208352025 = 231006^2 + 184955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87572124061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87572123999 and 87572124017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87572164061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43786062030 + 43786062031.

It is an arithmetic number, because the mean of its divisors is an integer number (43786062031).

Almost surely, 2^87572124061 is an apocalyptic number.

It is an amenable number.

87572124061 is a deficient number, since it is larger than the sum of its proper divisors (1).

87572124061 is an equidigital number, since it uses as much as digits as its factorization.

87572124061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 87572124061 in words is "eighty-seven billion, five hundred seventy-two million, one hundred twenty-four thousand, sixty-one".