77554025125146 has 48 divisors (see below), whose sum is σ = 169965053078184. Its totient is φ = 25554838597632.

The previous prime is 77554025125111. The next prime is 77554025125169. The reversal of 77554025125146 is 64152152045577.

77554025125146 is a `hidden beast` number, since 7 + 7 + 5 + 540 + 2 + 5 + 1 + 2 + 51 + 46 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 34680851012025 + 42873174113121 = 5889045^2 + 6547761^2 .

It is a super-2 number, since 2×77554025125146² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77554025125092 and 77554025125101.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24547071 + ... + 27525746.

Almost surely, 2^{77554025125146} is an apocalyptic number.

77554025125146 is an abundant number, since it is smaller than the sum of its proper divisors (92411027953038).

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

77554025125146 is a wasteful number, since it uses less digits than its factorization.

77554025125146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52073775 (or 52073772 counting only the distinct ones).

The product of its (nonzero) digits is 11760000, while the sum is 54.

The spelling of 77554025125146 in words is "seventy-seven trillion, five hundred fifty-four billion, twenty-five million, one hundred twenty-five thousand, one hundred forty-six".