614421561646451 has 4 divisors (see below), whose sum is σ = 661684758696192. Its totient is φ = 567158364596712.

The previous prime is 614421561646447. The next prime is 614421561646513. The reversal of 614421561646451 is 154646165124416.

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 614421561646451 - 2² = 614421561646447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (614421561646351) 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, 23631598524851 + ... + 23631598524876.

It is an arithmetic number, because the mean of its divisors is an integer number (165421189674048).

Almost surely, 2^{614421561646451} is an apocalyptic number.

614421561646451 is a deficient number, since it is larger than the sum of its proper divisors (47263197049741).

614421561646451 is a wasteful number, since it uses less digits than its factorization.

614421561646451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47263197049740.

The product of its digits is 16588800, while the sum is 56.

The spelling of 614421561646451 in words is "six hundred fourteen trillion, four hundred twenty-one billion, five hundred sixty-one million, six hundred forty-six thousand, four hundred fifty-one".