135638081598 has 16 divisors (see below), whose sum is σ = 271285825680. Its totient is φ = 45211083456.

The previous prime is 135638081587. The next prime is 135638081609. The reversal of 135638081598 is 895180836531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135638081587) and next prime (135638081609).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213265 + ... + 562812.

It is an arithmetic number, because the mean of its divisors is an integer number (16955364105).

Almost surely, 2^135638081598 is an apocalyptic number.

135638081598 is an abundant number, since it is smaller than the sum of its proper divisors (135647744082).

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

135638081598 is a wasteful number, since it uses less digits than its factorization.

135638081598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805211.

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 135638081598 in words is "one hundred thirty-five billion, six hundred thirty-eight million, eighty-one thousand, five hundred ninety-eight".