1020103516155 has 32 divisors (see below), whose sum is σ = 1758024195840. Its totient is φ = 503434189440.

The previous prime is 1020103516151. The next prime is 1020103516217. The reversal of 1020103516155 is 5516153010201.

It is not a de Polignac number, because 1020103516155 - 2² = 1020103516151 is a prime.

It is a super-2 number, since 2×1020103516155² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020103516151) 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, 41607636 + ... + 41632145.

It is an arithmetic number, because the mean of its divisors is an integer number (54938256120).

Almost surely, 2^{1020103516155} is an apocalyptic number.

1020103516155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020103516155 is a deficient number, since it is larger than the sum of its proper divisors (737920679685).

1020103516155 is a wasteful number, since it uses less digits than its factorization.

1020103516155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83239851.

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 1020103516155 its reverse (5516153010201), we get a palindrome (6536256526356).

The spelling of 1020103516155 in words is "one trillion, twenty billion, one hundred three million, five hundred sixteen thousand, one hundred fifty-five".