87723179023 has 2 divisors, whose sum is σ = 87723179024. Its totient is φ = 87723179022.

The previous prime is 87723179009. The next prime is 87723179041. The reversal of 87723179023 is 32097132778.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87723179023 - 2¹³ = 87723170831 is a prime.

It is a super-2 number, since 2×87723179023² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87723149023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43861589511 + 43861589512.

It is an arithmetic number, because the mean of its divisors is an integer number (43861589512).

Almost surely, 2^87723179023 is an apocalyptic number.

87723179023 is a deficient number, since it is larger than the sum of its proper divisors (1).

87723179023 is an equidigital number, since it uses as much as digits as its factorization.

87723179023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 87723179023 in words is "eighty-seven billion, seven hundred twenty-three million, one hundred seventy-nine thousand, twenty-three".