73477877749 has 2 divisors, whose sum is σ = 73477877750. Its totient is φ = 73477877748.

The previous prime is 73477877743. The next prime is 73477877761. The reversal of 73477877749 is 94777877437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73476234225 + 1643524 = 271065^2 + 1282^2 .

It is a cyclic number.

It is not a de Polignac number, because 73477877749 - 2¹⁷ = 73477746677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73477877743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36738938874 + 36738938875.

It is an arithmetic number, because the mean of its divisors is an integer number (36738938875).

Almost surely, 2^73477877749 is an apocalyptic number.

It is an amenable number.

73477877749 is a deficient number, since it is larger than the sum of its proper divisors (1).

73477877749 is an equidigital number, since it uses as much as digits as its factorization.

73477877749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 406594944, while the sum is 70.

The spelling of 73477877749 in words is "seventy-three billion, four hundred seventy-seven million, eight hundred seventy-seven thousand, seven hundred forty-nine".