87820222773 has 16 divisors (see below), whose sum is σ = 120571105536. Its totient is φ = 56822876160.

The previous prime is 87820222771. The next prime is 87820222783. The reversal of 87820222773 is 37722202878.

It is not a de Polignac number, because 87820222773 - 2¹ = 87820222771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87820222771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1825965 + ... + 1873442.

It is an arithmetic number, because the mean of its divisors is an integer number (7535694096).

Almost surely, 2^87820222773 is an apocalyptic number.

It is an amenable number.

87820222773 is a deficient number, since it is larger than the sum of its proper divisors (32750882763).

87820222773 is a wasteful number, since it uses less digits than its factorization.

87820222773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699644.

The product of its (nonzero) digits is 1053696, while the sum is 48.

The spelling of 87820222773 in words is "eighty-seven billion, eight hundred twenty million, two hundred twenty-two thousand, seven hundred seventy-three".