76978006111585 has 8 divisors (see below), whose sum is σ = 94626622147176. Its totient is φ = 60080395013760.

The previous prime is 76978006111553. The next prime is 76978006111631. The reversal of 76978006111585 is 58511160087967.

It can be written as a sum of positive squares in 4 ways, for example, as 60072049216 + 76917934062369 = 245096^2 + 8770287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76978006111585 - 2⁵ = 76978006111553 is a prime.

It is a super-2 number, since 2×76978006111585² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187751234214 + ... + 187751234623.

It is an arithmetic number, because the mean of its divisors is an integer number (11828327768397).

Almost surely, 2^{76978006111585} is an apocalyptic number.

It is an amenable number.

76978006111585 is a deficient number, since it is larger than the sum of its proper divisors (17648616035591).

76978006111585 is a wasteful number, since it uses less digits than its factorization.

76978006111585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375502468883.

The product of its (nonzero) digits is 25401600, while the sum is 64.

The spelling of 76978006111585 in words is "seventy-six trillion, nine hundred seventy-eight billion, six million, one hundred eleven thousand, five hundred eighty-five".