135778136890 has 16 divisors (see below), whose sum is σ = 266618887200. Its totient is φ = 49373867920.

The previous prime is 135778136881. The next prime is 135778136899. The reversal of 135778136890 is 98631877531.

It is an interprime number because it is at equal distance from previous prime (135778136881) and next prime (135778136899).

It is not an unprimeable number, because it can be changed into a prime (135778136899) 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, 617173240 + ... + 617173459.

It is an arithmetic number, because the mean of its divisors is an integer number (16663680450).

Almost surely, 2^135778136890 is an apocalyptic number.

135778136890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135778136890 is a deficient number, since it is larger than the sum of its proper divisors (130840750310).

135778136890 is a wasteful number, since it uses less digits than its factorization.

135778136890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234346717.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 135778136890 in words is "one hundred thirty-five billion, seven hundred seventy-eight million, one hundred thirty-six thousand, eight hundred ninety".