1015155155061 has 6 divisors (see below), whose sum is σ = 1466335223990. Its totient is φ = 676770103368.

The previous prime is 1015155155011. The next prime is 1015155155089. The reversal of 1015155155061 is 1605515515101.

1015155155061 is a `hidden beast` number, since 1 + 0 + 1 + 51 + 5 + 51 + 550 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 943909402500 + 71245752561 = 971550^2 + 266919^2 .

It is not a de Polignac number, because 1015155155061 - 2¹³ = 1015155146869 is a prime.

It is a super-4 number, since 4×1015155155061⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015155155011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56397508606 + ... + 56397508623.

Almost surely, 2^{1015155155061} is an apocalyptic number.

It is an amenable number.

1015155155061 is a deficient number, since it is larger than the sum of its proper divisors (451180068929).

1015155155061 is a wasteful number, since it uses less digits than its factorization.

1015155155061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112795017235 (or 112795017232 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 1015155155061 in words is "one trillion, fifteen billion, one hundred fifty-five million, one hundred fifty-five thousand, sixty-one".