75421897686516 has 48 divisors (see below), whose sum is σ = 186748398144000. Its totient is φ = 23639975786592.

The previous prime is 75421897686503. The next prime is 75421897686547. The reversal of 75421897686516 is 61568679812457.

It is a happy number.

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, 2315812066 + ... + 2315844633.

It is an arithmetic number, because the mean of its divisors is an integer number (3890591628000).

Almost surely, 2^{75421897686516} is an apocalyptic number.

It is an amenable number.

75421897686516 is an abundant number, since it is smaller than the sum of its proper divisors (111326500457484).

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

75421897686516 is a wasteful number, since it uses less digits than its factorization.

75421897686516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631656788 (or 4631656786 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 75.

The spelling of 75421897686516 in words is "seventy-five trillion, four hundred twenty-one billion, eight hundred ninety-seven million, six hundred eighty-six thousand, five hundred sixteen".