635230400131487 has 2 divisors, whose sum is σ = 635230400131488. Its totient is φ = 635230400131486.

The previous prime is 635230400131441. The next prime is 635230400131553. The reversal of 635230400131487 is 784131004032536.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 635230400131487 - 2³⁶ = 635161680654751 is a prime.

It is a super-2 number, since 2×635230400131487² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635230400131427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317615200065743 + 317615200065744.

It is an arithmetic number, because the mean of its divisors is an integer number (317615200065744).

Almost surely, 2^{635230400131487} is an apocalyptic number.

635230400131487 is a deficient number, since it is larger than the sum of its proper divisors (1).

635230400131487 is an equidigital number, since it uses as much as digits as its factorization.

635230400131487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 635230400131487 in words is "six hundred thirty-five trillion, two hundred thirty billion, four hundred million, one hundred thirty-one thousand, four hundred eighty-seven".