135780655851731 has 16 divisors (see below), whose sum is σ = 158360243678208. Its totient is φ = 115048040246400.

The previous prime is 135780655851719. The next prime is 135780655851803. The reversal of 135780655851731 is 137158556087531.

It is a happy number.

It is not a de Polignac number, because 135780655851731 - 2¹⁸ = 135780655589587 is a prime.

It is a super-3 number, since 3×135780655851731³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (135780655851131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3524736875 + ... + 3524775396.

It is an arithmetic number, because the mean of its divisors is an integer number (9897515229888).

Almost surely, 2^{135780655851731} is an apocalyptic number.

135780655851731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135780655851731 is a deficient number, since it is larger than the sum of its proper divisors (22579587826477).

135780655851731 is a wasteful number, since it uses less digits than its factorization.

135780655851731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049512402.

The product of its (nonzero) digits is 105840000, while the sum is 65.

The spelling of 135780655851731 in words is "one hundred thirty-five trillion, seven hundred eighty billion, six hundred fifty-five million, eight hundred fifty-one thousand, seven hundred thirty-one".