75420172446 has 32 divisors (see below), whose sum is σ = 151887808800. Its totient is φ = 24965558784.

The previous prime is 75420172439. The next prime is 75420172463. The reversal of 75420172446 is 64427102457.

It is a junction number, because it is equal to n+sod(n) for n = 75420172398 and 75420172407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5780346 + ... + 5793378.

It is an arithmetic number, because the mean of its divisors is an integer number (4746494025).

Almost surely, 2^75420172446 is an apocalyptic number.

75420172446 is an abundant number, since it is smaller than the sum of its proper divisors (76467636354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75420172446 is a wasteful number, since it uses less digits than its factorization.

75420172446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19660.

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 75420172446 in words is "seventy-five billion, four hundred twenty million, one hundred seventy-two thousand, four hundred forty-six".