73435403663 has 2 divisors, whose sum is σ = 73435403664. Its totient is φ = 73435403662.

The previous prime is 73435403653. The next prime is 73435403683. The reversal of 73435403663 is 36630453437.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73435403663 - 2⁶ = 73435403599 is a prime.

It is a super-2 number, since 2×73435403663² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73435403653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36717701831 + 36717701832.

It is an arithmetic number, because the mean of its divisors is an integer number (36717701832).

Almost surely, 2^73435403663 is an apocalyptic number.

73435403663 is a deficient number, since it is larger than the sum of its proper divisors (1).

73435403663 is an equidigital number, since it uses as much as digits as its factorization.

73435403663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 44.

The spelling of 73435403663 in words is "seventy-three billion, four hundred thirty-five million, four hundred three thousand, six hundred sixty-three".