75521548406652 has 24 divisors (see below), whose sum is σ = 176217213801216. Its totient is φ = 25173811251888.

The previous prime is 75521548406621. The next prime is 75521548406659. The reversal of 75521548406652 is 25660484512557.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75521548406659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4119463 + ... + 12961985.

It is an arithmetic number, because the mean of its divisors is an integer number (7342383908384).

Almost surely, 2^{75521548406652} is an apocalyptic number.

It is an amenable number.

75521548406652 is an abundant number, since it is smaller than the sum of its proper divisors (100695665394564).

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

75521548406652 is a wasteful number, since it uses less digits than its factorization.

75521548406652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554257 (or 9554255 counting only the distinct ones).

The product of its (nonzero) digits is 80640000, while the sum is 60.

The spelling of 75521548406652 in words is "seventy-five trillion, five hundred twenty-one billion, five hundred forty-eight million, four hundred six thousand, six hundred fifty-two".