134890661788 has 6 divisors (see below), whose sum is σ = 236058658136. Its totient is φ = 67445330892.

The previous prime is 134890661779. The next prime is 134890661813. The reversal of 134890661788 is 887166098431.

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 as a sum of consecutive naturals, namely, 16861332720 + ... + 16861332727.

Almost surely, 2^134890661788 is an apocalyptic number.

It is an amenable number.

134890661788 is a deficient number, since it is larger than the sum of its proper divisors (101167996348).

134890661788 is a wasteful number, since it uses less digits than its factorization.

134890661788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33722665451 (or 33722665449 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 134890661788 in words is "one hundred thirty-four billion, eight hundred ninety million, six hundred sixty-one thousand, seven hundred eighty-eight".