1197409653172 has 24 divisors (see below), whose sum is σ = 2147907113352. Its totient is φ = 583740019200.

The previous prime is 1197409653163. The next prime is 1197409653179. The reversal of 1197409653172 is 2713569047911.

It can be written as a sum of positive squares in 4 ways, for example, as 1614914596 + 1195794738576 = 40186^2 + 1093524^2 .

It is a super-3 number, since 3×1197409653172³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197409653179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998729 + ... + 2527792.

It is an arithmetic number, because the mean of its divisors is an integer number (89496129723).

Almost surely, 2^{1197409653172} is an apocalyptic number.

It is an amenable number.

1197409653172 is a deficient number, since it is larger than the sum of its proper divisors (950497460180).

1197409653172 is a wasteful number, since it uses less digits than its factorization.

1197409653172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528179 (or 4528177 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 55.

It can be divided in two parts, 1197409 and 653172, that added together give a palindrome (1850581).

The spelling of 1197409653172 in words is "one trillion, one hundred ninety-seven billion, four hundred nine million, six hundred fifty-three thousand, one hundred seventy-two".