77432401147 has 2 divisors, whose sum is σ = 77432401148. Its totient is φ = 77432401146.

The previous prime is 77432401063. The next prime is 77432401187. The reversal of 77432401147 is 74110423477.

It is an a-pointer prime, because the next prime (77432401187) can be obtained adding 77432401147 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77432401147 - 2⁷ = 77432401019 is a prime.

It is not a weakly prime, because it can be changed into another prime (77432401187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38716200573 + 38716200574.

It is an arithmetic number, because the mean of its divisors is an integer number (38716200574).

Almost surely, 2^77432401147 is an apocalyptic number.

77432401147 is a deficient number, since it is larger than the sum of its proper divisors (1).

77432401147 is an equidigital number, since it uses as much as digits as its factorization.

77432401147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 77432401147 in words is "seventy-seven billion, four hundred thirty-two million, four hundred one thousand, one hundred forty-seven".