135377021859 has 8 divisors (see below), whose sum is σ = 191120501520. Its totient is φ = 84942445056.

The previous prime is 135377021839. The next prime is 135377021861. The reversal of 135377021859 is 958120773531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135377021859 - 2⁵ = 135377021827 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 2654451409 = 135377021859 / (1 + 3 + 5 + 3 + 7 + 7 + 0 + 2 + 1 + 8 + 5 + 9).

It is not an unprimeable number, because it can be changed into a prime (135377021839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327225654 + ... + 1327225755.

It is an arithmetic number, because the mean of its divisors is an integer number (23890062690).

Almost surely, 2^135377021859 is an apocalyptic number.

135377021859 is a deficient number, since it is larger than the sum of its proper divisors (55743479661).

135377021859 is a wasteful number, since it uses less digits than its factorization.

135377021859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654451429.

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 135377021859 in words is "one hundred thirty-five billion, three hundred seventy-seven million, twenty-one thousand, eight hundred fifty-nine".