75233105981 has 16 divisors (see below), whose sum is σ = 83297870208. Its totient is φ = 67374182400.

The previous prime is 75233105971. The next prime is 75233105999. The reversal of 75233105981 is 18950133257.

It is a cyclic number.

It is not a de Polignac number, because 75233105981 - 2¹⁸ = 75232843837 is a prime.

It is a super-2 number, since 2×75233105981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75233105921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910901 + ... + 990053.

It is an arithmetic number, because the mean of its divisors is an integer number (5206116888).

Almost surely, 2^75233105981 is an apocalyptic number.

75233105981 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

75233105981 is a deficient number, since it is larger than the sum of its proper divisors (8064764227).

75233105981 is a wasteful number, since it uses less digits than its factorization.

75233105981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80452.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 75233105981 in words is "seventy-five billion, two hundred thirty-three million, one hundred five thousand, nine hundred eighty-one".