1001155501197 has 12 divisors (see below), whose sum is σ = 1466481298464. Its totient is φ = 658036479240.

The previous prime is 1001155501189. The next prime is 1001155501211. The reversal of 1001155501197 is 7911055511001.

1001155501197 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 1 + 5 + 550 + 11 + 97 = 666.

It is not a de Polignac number, because 1001155501197 - 2³ = 1001155501189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001155505197) 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, 783376123 + ... + 783377400.

It is an arithmetic number, because the mean of its divisors is an integer number (122206774872).

Almost surely, 2^{1001155501197} is an apocalyptic number.

It is an amenable number.

1001155501197 is a deficient number, since it is larger than the sum of its proper divisors (465325797267).

1001155501197 is a wasteful number, since it uses less digits than its factorization.

1001155501197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566753600 (or 1566753597 counting only the distinct ones).

The product of its (nonzero) digits is 7875, while the sum is 36.

The spelling of 1001155501197 in words is "one trillion, one billion, one hundred fifty-five million, five hundred one thousand, one hundred ninety-seven".