102541020015 has 64 divisors (see below), whose sum is σ = 189545702400. Its totient is φ = 46367053824.

The previous prime is 102541019957. The next prime is 102541020017. The reversal of 102541020015 is 510020145201.

It is not a de Polignac number, because 102541020015 - 2¹² = 102541015919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 102541019973 and 102541020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102541020017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6030796 + ... + 6047774.

It is an arithmetic number, because the mean of its divisors is an integer number (2961651600).

Almost surely, 2^102541020015 is an apocalyptic number.

102541020015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102541020015 is a deficient number, since it is larger than the sum of its proper divisors (87004682385).

102541020015 is a wasteful number, since it uses less digits than its factorization.

102541020015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17616.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 102541020015 its reverse (510020145201), we get a palindrome (612561165216).

The spelling of 102541020015 in words is "one hundred two billion, five hundred forty-one million, twenty thousand, fifteen".