1761125638545 has 96 divisors (see below), whose sum is σ = 3763473622272. Its totient is φ = 741889276416.

The previous prime is 1761125638543. The next prime is 1761125638561. The reversal of 1761125638545 is 5458365211671.

1761125638545 is a `hidden beast` number, since 1 + 7 + 6 + 1 + 1 + 256 + 385 + 4 + 5 = 666.

It is not a de Polignac number, because 1761125638545 - 2¹ = 1761125638543 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1761125638491 and 1761125638500.

It is not an unprimeable number, because it can be changed into a prime (1761125638543) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2037439 + ... + 2770091.

It is an arithmetic number, because the mean of its divisors is an integer number (39202850232).

Almost surely, 2^{1761125638545} is an apocalyptic number.

1761125638545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1761125638545 is an abundant number, since it is smaller than the sum of its proper divisors (2002347983727).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1761125638545 is a wasteful number, since it uses less digits than its factorization.

1761125638545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733271 (or 733268 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 1761125638545 in words is "one trillion, seven hundred sixty-one billion, one hundred twenty-five million, six hundred thirty-eight thousand, five hundred forty-five".