77734823770870 has 32 divisors (see below), whose sum is σ = 160715213568000. Its totient is φ = 26518010229216.

The previous prime is 77734823770867. The next prime is 77734823770871. The reversal of 77734823770870 is 7807732843777.

It is a super-3 number, since 3×77734823770870³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is a self number, because there is not a number n which added to its sum of digits gives 77734823770870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77734823770871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2790180750 + ... + 2790208609.

It is an arithmetic number, because the mean of its divisors is an integer number (5022350424000).

Almost surely, 2^{77734823770870} is an apocalyptic number.

77734823770870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77734823770870 is an abundant number, since it is smaller than the sum of its proper divisors (82980389797130).

77734823770870 is a wasteful number, since it uses less digits than its factorization.

77734823770870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580389572.

The product of its (nonzero) digits is 542126592, while the sum is 70.

The spelling of 77734823770870 in words is "seventy-seven trillion, seven hundred thirty-four billion, eight hundred twenty-three million, seven hundred seventy thousand, eight hundred seventy".