7561485761438 has 64 divisors (see below), whose sum is σ = 13092913063296. Its totient is φ = 3208240896000.

The previous prime is 7561485761429. The next prime is 7561485761441. The reversal of 7561485761438 is 8341675841657.

It is a happy number.

It is a super-2 number, since 2×7561485761438² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 589767068 + ... + 589779888.

It is an arithmetic number, because the mean of its divisors is an integer number (204576766614).

Almost surely, 2^{7561485761438} is an apocalyptic number.

7561485761438 is a deficient number, since it is larger than the sum of its proper divisors (5531427301858).

7561485761438 is a wasteful number, since it uses less digits than its factorization.

7561485761438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14069.

The product of its digits is 135475200, while the sum is 65.

The spelling of 7561485761438 in words is "seven trillion, five hundred sixty-one billion, four hundred eighty-five million, seven hundred sixty-one thousand, four hundred thirty-eight".