154947289499 has 2 divisors, whose sum is σ = 154947289500. Its totient is φ = 154947289498.

The previous prime is 154947289411. The next prime is 154947289517. The reversal of 154947289499 is 994982749451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154947289499 is a prime.

It is not a weakly prime, because it can be changed into another prime (154947289099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77473644749 + 77473644750.

It is an arithmetic number, because the mean of its divisors is an integer number (77473644750).

Almost surely, 2^154947289499 is an apocalyptic number.

154947289499 is a deficient number, since it is larger than the sum of its proper divisors (1).

154947289499 is an equidigital number, since it uses as much as digits as its factorization.

154947289499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235146240, while the sum is 71.

The spelling of 154947289499 in words is "one hundred fifty-four billion, nine hundred forty-seven million, two hundred eighty-nine thousand, four hundred ninety-nine".