136621041451 has 4 divisors (see below), whose sum is σ = 143811622600. Its totient is φ = 129430460304.

The previous prime is 136621041449. The next prime is 136621041457. The reversal of 136621041451 is 154140126631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136621041451 - 2¹ = 136621041449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136621041457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3595290546 + ... + 3595290583.

It is an arithmetic number, because the mean of its divisors is an integer number (35952905650).

Almost surely, 2^136621041451 is an apocalyptic number.

136621041451 is a deficient number, since it is larger than the sum of its proper divisors (7190581149).

136621041451 is an equidigital number, since it uses as much as digits as its factorization.

136621041451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190581148.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 136621041451 in words is "one hundred thirty-six billion, six hundred twenty-one million, forty-one thousand, four hundred fifty-one".