201587785102 has 64 divisors (see below), whose sum is σ = 350591846400. Its totient is φ = 85916436480.

The previous prime is 201587785097. The next prime is 201587785103.

201587785102 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201587785103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199789174 + ... + 199790182.

It is an arithmetic number, because the mean of its divisors is an integer number (5477997600).

Almost surely, 2^201587785102 is an apocalyptic number.

201587785102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201587785102 is a deficient number, since it is larger than the sum of its proper divisors (149004061298).

201587785102 is a wasteful number, since it uses less digits than its factorization.

201587785102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521.

The product of its (nonzero) digits is 313600, while the sum is 46.

It can be divided in two parts, 201587 and 785102, that added together give a palindrome (986689).

The spelling of 201587785102 in words is "two hundred one billion, five hundred eighty-seven million, seven hundred eighty-five thousand, one hundred two".