7521347687131 has 2 divisors, whose sum is σ = 7521347687132. Its totient is φ = 7521347687130.

The previous prime is 7521347687099. The next prime is 7521347687141. The reversal of 7521347687131 is 1317867431257.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7521347687131 - 2⁵ = 7521347687099 is a prime.

It is a super-2 number, since 2×7521347687131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7521347687141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3760673843565 + 3760673843566.

It is an arithmetic number, because the mean of its divisors is an integer number (3760673843566).

Almost surely, 2^{7521347687131} is an apocalyptic number.

7521347687131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7521347687131 is an equidigital number, since it uses as much as digits as its factorization.

7521347687131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 55.

The spelling of 7521347687131 in words is "seven trillion, five hundred twenty-one billion, three hundred forty-seven million, six hundred eighty-seven thousand, one hundred thirty-one".