1000012015655 has 32 divisors (see below), whose sum is σ = 1304313580800. Its totient is φ = 733235023872.

The previous prime is 1000012015643. The next prime is 1000012015697. The reversal of 1000012015655 is 5565102100001.

1000012015655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000012015655 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529820 + ... + 1510209.

It is an arithmetic number, because the mean of its divisors is an integer number (40759799400).

Almost surely, 2^{1000012015655} is an apocalyptic number.

1000012015655 is a deficient number, since it is larger than the sum of its proper divisors (304301565145).

1000012015655 is a wasteful number, since it uses less digits than its factorization.

1000012015655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040203.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 1000012015655 its reverse (5565102100001), we get a palindrome (6565114115656).

The spelling of 1000012015655 in words is "one trillion, twelve million, fifteen thousand, six hundred fifty-five".