87753085631 has 2 divisors, whose sum is σ = 87753085632. Its totient is φ = 87753085630.

The previous prime is 87753085603. The next prime is 87753085643. The reversal of 87753085631 is 13658035778.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87753085631 - 2¹⁰ = 87753084607 is a prime.

It is a super-2 number, since 2×87753085631² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87753085661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43876542815 + 43876542816.

It is an arithmetic number, because the mean of its divisors is an integer number (43876542816).

Almost surely, 2^87753085631 is an apocalyptic number.

87753085631 is a deficient number, since it is larger than the sum of its proper divisors (1).

87753085631 is an equidigital number, since it uses as much as digits as its factorization.

87753085631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 87753085631 in words is "eighty-seven billion, seven hundred fifty-three million, eighty-five thousand, six hundred thirty-one".