135787820554 has 16 divisors (see below), whose sum is σ = 206611900992. Its totient is φ = 66920966208.

The previous prime is 135787820549. The next prime is 135787820573. The reversal of 135787820554 is 455028787531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135787820495 and 135787820504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872694 + ... + 1016449.

It is an arithmetic number, because the mean of its divisors is an integer number (12913243812).

Almost surely, 2^135787820554 is an apocalyptic number.

135787820554 is a deficient number, since it is larger than the sum of its proper divisors (70824080438).

135787820554 is a wasteful number, since it uses less digits than its factorization.

135787820554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889661.

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 135787820554 in words is "one hundred thirty-five billion, seven hundred eighty-seven million, eight hundred twenty thousand, five hundred fifty-four".