61333073073 has 30 divisors (see below), whose sum is σ = 95777796114. Its totient is φ = 39110917824.

The previous prime is 61333073071. The next prime is 61333073129. The reversal of 61333073073 is 37037033316.

61333073073 is a `hidden beast` number, since 6 + 13 + 330 + 7 + 307 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61291895184 + 41177889 = 247572^2 + 6417^2 .

It is not a de Polignac number, because 61333073073 - 2¹ = 61333073071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61333073071) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 672840 + ... + 758537.

Almost surely, 2^61333073073 is an apocalyptic number.

It is an amenable number.

61333073073 is a deficient number, since it is larger than the sum of its proper divisors (34444723041).

61333073073 is a wasteful number, since it uses less digits than its factorization.

61333073073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431435 (or 1431403 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 36.

The spelling of 61333073073 in words is "sixty-one billion, three hundred thirty-three million, seventy-three thousand, seventy-three".