78177258461136 has 40 divisors (see below), whose sum is σ = 207416239795744. Its totient is φ = 25354786527360.

The previous prime is 78177258461047. The next prime is 78177258461167. The reversal of 78177258461136 is 63116485277187.

It is a happy number.

It is a super-3 number, since 3×78177258461136³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22009361530 + ... + 22009365081.

Almost surely, 2^{78177258461136} is an apocalyptic number.

It is an amenable number.

78177258461136 is an abundant number, since it is smaller than the sum of its proper divisors (129238981334608).

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

78177258461136 is a wasteful number, since it uses less digits than its factorization.

78177258461136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44018726659 (or 44018726653 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 66.

The spelling of 78177258461136 in words is "seventy-eight trillion, one hundred seventy-seven billion, two hundred fifty-eight million, four hundred sixty-one thousand, one hundred thirty-six".