102540402566 has 16 divisors (see below), whose sum is σ = 178665246240. Its totient is φ = 43225462080.

The previous prime is 102540402557. The next prime is 102540402599. The reversal of 102540402566 is 665204045201.

102540402566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60034511 + ... + 60036218.

It is an arithmetic number, because the mean of its divisors is an integer number (11166577890).

Almost surely, 2^102540402566 is an apocalyptic number.

102540402566 is a deficient number, since it is larger than the sum of its proper divisors (76124843674).

102540402566 is a wasteful number, since it uses less digits than its factorization.

102540402566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120070799.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 102540402566 its reverse (665204045201), we get a palindrome (767744447767).

The spelling of 102540402566 in words is "one hundred two billion, five hundred forty million, four hundred two thousand, five hundred sixty-six".