87775087994896 has 45 divisors (see below), whose sum is σ = 180657780188119. Its totient is φ = 41305623959552.

The previous prime is 87775087994813. The next prime is 87775087994899. The reversal of 87775087994896 is 69849978057778.

The square root of 87775087994896 is 9368836.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8596412897296 + 79178675097600 = 2931964^2 + 8898240^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87775087994899) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 637011960 + ... + 637149736.

Almost surely, 2^{87775087994896} is an apocalyptic number.

87775087994896 is the 9368836-th square number.

It is an amenable number.

87775087994896 is an abundant number, since it is smaller than the sum of its proper divisors (92882692193223).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87775087994896 is an frugal number, since it uses more digits than its factorization.

87775087994896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275596 (or 137796 counting only the distinct ones).

The product of its (nonzero) digits is 107540213760, while the sum is 94.

The spelling of 87775087994896 in words is "eighty-seven trillion, seven hundred seventy-five billion, eighty-seven million, nine hundred ninety-four thousand, eight hundred ninety-six".