745553753181 has 12 divisors (see below), whose sum is σ = 1076921243580. Its totient is φ = 497031096960.

The previous prime is 745553753167. The next prime is 745553753209. The reversal of 745553753181 is 181357355547.

745553753181 is a `hidden beast` number, since 7 + 4 + 5 + 553 + 7 + 5 + 3 + 1 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 429326352900 + 316227400281 = 655230^2 + 562341^2 .

It is not a de Polignac number, because 745553753181 - 2¹³ = 745553744989 is a prime.

It is a super-2 number, since 2×745553753181² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745553753141) 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, 788151 + ... + 1453371.

It is an arithmetic number, because the mean of its divisors is an integer number (89743436965).

Almost surely, 2^745553753181 is an apocalyptic number.

It is an amenable number.

745553753181 is a deficient number, since it is larger than the sum of its proper divisors (331367490399).

745553753181 is a wasteful number, since it uses less digits than its factorization.

745553753181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789756 (or 789753 counting only the distinct ones).

The product of its digits is 8820000, while the sum is 54.

The spelling of 745553753181 in words is "seven hundred forty-five billion, five hundred fifty-three million, seven hundred fifty-three thousand, one hundred eighty-one".