154642403246461 has 4 divisors (see below), whose sum is σ = 166537972726972. Its totient is φ = 142746833765952.

The previous prime is 154642403246431. The next prime is 154642403246519. The reversal of 154642403246461 is 164642304246451.

154642403246461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 99048155862436 + 55594247384025 = 9952294^2 + 7456155^2 .

It is not a de Polignac number, because 154642403246461 - 2⁷ = 154642403246333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154642403246399 and 154642403246408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154642403246431) 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, 5947784740236 + ... + 5947784740261.

It is an arithmetic number, because the mean of its divisors is an integer number (41634493181743).

Almost surely, 2^{154642403246461} is an apocalyptic number.

It is an amenable number.

154642403246461 is a deficient number, since it is larger than the sum of its proper divisors (11895569480511).

154642403246461 is a wasteful number, since it uses less digits than its factorization.

154642403246461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895569480510.

The product of its (nonzero) digits is 13271040, while the sum is 52.

The spelling of 154642403246461 in words is "one hundred fifty-four trillion, six hundred forty-two billion, four hundred three million, two hundred forty-six thousand, four hundred sixty-one".