87133939679 has 2 divisors, whose sum is σ = 87133939680. Its totient is φ = 87133939678.

The previous prime is 87133939663. The next prime is 87133939687. The reversal of 87133939679 is 97693933178.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87133939679 - 2⁴ = 87133939663 is a prime.

It is a super-2 number, since 2×87133939679² (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 (87133939649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43566969839 + 43566969840.

It is an arithmetic number, because the mean of its divisors is an integer number (43566969840).

Almost surely, 2^87133939679 is an apocalyptic number.

87133939679 is a deficient number, since it is larger than the sum of its proper divisors (1).

87133939679 is an equidigital number, since it uses as much as digits as its factorization.

87133939679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46294416, while the sum is 65.

The spelling of 87133939679 in words is "eighty-seven billion, one hundred thirty-three million, nine hundred thirty-nine thousand, six hundred seventy-nine".