73661913011 has 2 divisors, whose sum is σ = 73661913012. Its totient is φ = 73661913010.

The previous prime is 73661912957. The next prime is 73661913071. The reversal of 73661913011 is 11031916637.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73661913011 - 2¹⁰ = 73661911987 is a prime.

It is a super-2 number, since 2×73661913011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73661913071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36830956505 + 36830956506.

It is an arithmetic number, because the mean of its divisors is an integer number (36830956506).

Almost surely, 2^73661913011 is an apocalyptic number.

73661913011 is a deficient number, since it is larger than the sum of its proper divisors (1).

73661913011 is an equidigital number, since it uses as much as digits as its factorization.

73661913011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The spelling of 73661913011 in words is "seventy-three billion, six hundred sixty-one million, nine hundred thirteen thousand, eleven".