87542720206 has 16 divisors (see below), whose sum is σ = 132635898288. Its totient is φ = 43330896000.

The previous prime is 87542720203. The next prime is 87542720207. The reversal of 87542720206 is 60202724578.

It is a super-2 number, since 2×87542720206² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87542720201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334086 + ... + 1398166.

It is an arithmetic number, because the mean of its divisors is an integer number (8289743643).

Almost surely, 2^87542720206 is an apocalyptic number.

87542720206 is a deficient number, since it is larger than the sum of its proper divisors (45093178082).

87542720206 is a wasteful number, since it uses less digits than its factorization.

87542720206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70947.

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 87542720206 in words is "eighty-seven billion, five hundred forty-two million, seven hundred twenty thousand, two hundred six".