75556147420 has 48 divisors (see below), whose sum is σ = 180924504768. Its totient is φ = 26256614400.

The previous prime is 75556147409. The next prime is 75556147423. The reversal of 75556147420 is 2474165557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75556147423) 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, 8542656 + ... + 8551495.

It is an arithmetic number, because the mean of its divisors is an integer number (3769260516).

Almost surely, 2^75556147420 is an apocalyptic number.

It is an amenable number.

75556147420 is an abundant number, since it is smaller than the sum of its proper divisors (105368357348).

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

75556147420 is a wasteful number, since it uses less digits than its factorization.

75556147420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094190 (or 17094188 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 46.

The spelling of 75556147420 in words is "seventy-five billion, five hundred fifty-six million, one hundred forty-seven thousand, four hundred twenty".