77855152425888 has 48 divisors (see below), whose sum is σ = 204958737093600. Its totient is φ = 25876928653056.

The previous prime is 77855152425881. The next prime is 77855152425901. The reversal of 77855152425888 is 88852425155877.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×77855152425888² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77855152425881) 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, 1168541863 + ... + 1168608486.

It is an arithmetic number, because the mean of its divisors is an integer number (4269973689450).

Almost surely, 2^{77855152425888} is an apocalyptic number.

It is an amenable number.

77855152425888 is an abundant number, since it is smaller than the sum of its proper divisors (127103584667712).

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

77855152425888 is a wasteful number, since it uses less digits than its factorization.

77855152425888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337150709 (or 2337150701 counting only the distinct ones).

The product of its digits is 2007040000, while the sum is 75.

The spelling of 77855152425888 in words is "seventy-seven trillion, eight hundred fifty-five billion, one hundred fifty-two million, four hundred twenty-five thousand, eight hundred eighty-eight".