1011055550157 has 12 divisors (see below), whose sum is σ = 1460939504700. Its totient is φ = 673794295488.

The previous prime is 1011055550119. The next prime is 1011055550161. The reversal of 1011055550157 is 7510555501101.

1011055550157 is a `hidden beast` number, since 1 + 0 + 1 + 1 + 0 + 55 + 550 + 1 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 551542390281 + 459513159876 = 742659^2 + 677874^2 .

It is not a de Polignac number, because 1011055550157 - 2⁶ = 1011055550093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011055550257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20201782 + ... + 20251767.

It is an arithmetic number, because the mean of its divisors is an integer number (121744958725).

Almost surely, 2^{1011055550157} is an apocalyptic number.

It is an amenable number.

1011055550157 is a deficient number, since it is larger than the sum of its proper divisors (449883954543).

1011055550157 is a wasteful number, since it uses less digits than its factorization.

1011055550157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40456332 (or 40456329 counting only the distinct ones).

The product of its (nonzero) digits is 21875, while the sum is 36.

The spelling of 1011055550157 in words is "one trillion, eleven billion, fifty-five million, five hundred fifty thousand, one hundred fifty-seven".