61033402989 has 32 divisors (see below), whose sum is σ = 97427836800. Its totient is φ = 37538726400.

The previous prime is 61033402957. The next prime is 61033403003. The reversal of 61033402989 is 98920433016.

It is a happy number.

61033402989 is a `hidden beast` number, since 6 + 10 + 3 + 340 + 298 + 9 = 666.

It is not a de Polignac number, because 61033402989 - 2⁵ = 61033402957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61033402489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617014 + ... + 709064.

It is an arithmetic number, because the mean of its divisors is an integer number (3044619900).

Almost surely, 2^61033402989 is an apocalyptic number.

It is an amenable number.

61033402989 is a deficient number, since it is larger than the sum of its proper divisors (36394433811).

61033402989 is a wasteful number, since it uses less digits than its factorization.

61033402989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93962 (or 93956 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 61033402989 in words is "sixty-one billion, thirty-three million, four hundred two thousand, nine hundred eighty-nine".