75021942646 has 24 divisors (see below), whose sum is σ = 135128402496. Its totient is φ = 31115090160.

The previous prime is 75021942613. The next prime is 75021942647. The reversal of 75021942646 is 64624912057.

It is a junction number, because it is equal to n+sod(n) for n = 75021942596 and 75021942605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75021942647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12344221 + ... + 12350296.

It is an arithmetic number, because the mean of its divisors is an integer number (5630350104).

Almost surely, 2^75021942646 is an apocalyptic number.

75021942646 is a deficient number, since it is larger than the sum of its proper divisors (60106459850).

75021942646 is a wasteful number, since it uses less digits than its factorization.

75021942646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24694564 (or 24694557 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 75021942646 in words is "seventy-five billion, twenty-one million, nine hundred forty-two thousand, six hundred forty-six".