102075015220815 has 48 divisors (see below), whose sum is σ = 204598711846368. Its totient is φ = 43073413012224.

The previous prime is 102075015220807. The next prime is 102075015220817. The reversal of 102075015220815 is 518022510570201.

It is a happy number.

It is not a de Polignac number, because 102075015220815 - 2³ = 102075015220807 is a prime.

It is a super-2 number, since 2×102075015220815² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102075015220817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5341435512 + ... + 5341454621.

It is an arithmetic number, because the mean of its divisors is an integer number (4262473163466).

Almost surely, 2^{102075015220815} is an apocalyptic number.

102075015220815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102075015220815 is an abundant number, since it is smaller than the sum of its proper divisors (102523696625553).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102075015220815 is a wasteful number, since it uses less digits than its factorization.

102075015220815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10682890168 (or 10682890161 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 39.

The spelling of 102075015220815 in words is "one hundred two trillion, seventy-five billion, fifteen million, two hundred twenty thousand, eight hundred fifteen".