87204920471 has 2 divisors, whose sum is σ = 87204920472. Its totient is φ = 87204920470.

The previous prime is 87204920437. The next prime is 87204920489. The reversal of 87204920471 is 17402940278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87204920471 - 2¹⁰ = 87204919447 is a prime.

It is a super-3 number, since 3×87204920471³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87204920431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43602460235 + 43602460236.

It is an arithmetic number, because the mean of its divisors is an integer number (43602460236).

Almost surely, 2^87204920471 is an apocalyptic number.

87204920471 is a deficient number, since it is larger than the sum of its proper divisors (1).

87204920471 is an equidigital number, since it uses as much as digits as its factorization.

87204920471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 87204920471 in words is "eighty-seven billion, two hundred four million, nine hundred twenty thousand, four hundred seventy-one".