154421140387 has 2 divisors, whose sum is σ = 154421140388. Its totient is φ = 154421140386.

The previous prime is 154421140331. The next prime is 154421140403. The reversal of 154421140387 is 783041124451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154421140387 is a prime.

It is not a weakly prime, because it can be changed into another prime (154421149387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77210570193 + 77210570194.

It is an arithmetic number, because the mean of its divisors is an integer number (77210570194).

Almost surely, 2^154421140387 is an apocalyptic number.

154421140387 is a deficient number, since it is larger than the sum of its proper divisors (1).

154421140387 is an equidigital number, since it uses as much as digits as its factorization.

154421140387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 154421140387 in words is "one hundred fifty-four billion, four hundred twenty-one million, one hundred forty thousand, three hundred eighty-seven".