102081815020887 has 16 divisors (see below), whose sum is σ = 146579390049120. Its totient is φ = 62819418356352.

The previous prime is 102081815020853. The next prime is 102081815020921. The reversal of 102081815020887 is 788020518180201.

It is an interprime number because it is at equal distance from previous prime (102081815020853) and next prime (102081815020921).

It is not a de Polignac number, because 102081815020887 - 2¹² = 102081815016791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102081815025887) 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, 13198789 + ... + 19451777.

It is an arithmetic number, because the mean of its divisors is an integer number (9161211878070).

Almost surely, 2^{102081815020887} is an apocalyptic number.

102081815020887 is a deficient number, since it is larger than the sum of its proper divisors (44497575028233).

102081815020887 is a wasteful number, since it uses less digits than its factorization.

102081815020887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671602.

The product of its (nonzero) digits is 573440, while the sum is 51.

The spelling of 102081815020887 in words is "one hundred two trillion, eighty-one billion, eight hundred fifteen million, twenty thousand, eight hundred eighty-seven".