75428215349 has 32 divisors (see below), whose sum is σ = 81923719680. Its totient is φ = 69215815872.

The previous prime is 75428215321. The next prime is 75428215361. The reversal of 75428215349 is 94351282457.

It is a cyclic number.

It is not a de Polignac number, because 75428215349 - 2¹² = 75428211253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75428215297 and 75428215306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75428215319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58789862 + ... + 58791144.

It is an arithmetic number, because the mean of its divisors is an integer number (2560116240).

Almost surely, 2^75428215349 is an apocalyptic number.

It is an amenable number.

75428215349 is a deficient number, since it is larger than the sum of its proper divisors (6495504331).

75428215349 is a wasteful number, since it uses less digits than its factorization.

75428215349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889.

The product of its digits is 2419200, while the sum is 50.

The spelling of 75428215349 in words is "seventy-five billion, four hundred twenty-eight million, two hundred fifteen thousand, three hundred forty-nine".