136354078562021 has 8 divisors (see below), whose sum is σ = 140765168146944. Its totient is φ = 131943774659760.

The previous prime is 136354078561999. The next prime is 136354078562047. The reversal of 136354078562021 is 120265870453631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136354078562021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136354078562081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196067945 + ... + 196762158.

It is an arithmetic number, because the mean of its divisors is an integer number (17595646018368).

Almost surely, 2^{136354078562021} is an apocalyptic number.

It is an amenable number.

136354078562021 is a deficient number, since it is larger than the sum of its proper divisors (4411089584923).

136354078562021 is a wasteful number, since it uses less digits than its factorization.

136354078562021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392841331.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 136354078562021 in words is "one hundred thirty-six trillion, three hundred fifty-four billion, seventy-eight million, five hundred sixty-two thousand, twenty-one".