1077847778617 has 16 divisors (see below), whose sum is σ = 1091491845120. Its totient is φ = 1064303452800.

The previous prime is 1077847778597. The next prime is 1077847778629. The reversal of 1077847778617 is 7168777487701.

It is a cyclic number.

It is not a de Polignac number, because 1077847778617 - 2⁷ = 1077847778489 is a prime.

It is a super-3 number, since 3×1077847778617³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1077847778647) 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, 25539109 + ... + 25581277.

It is an arithmetic number, because the mean of its divisors is an integer number (68218240320).

Almost surely, 2^{1077847778617} is an apocalyptic number.

It is an amenable number.

1077847778617 is a deficient number, since it is larger than the sum of its proper divisors (13644066503).

1077847778617 is a wasteful number, since it uses less digits than its factorization.

1077847778617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43344.

The product of its (nonzero) digits is 180708864, while the sum is 70.

The spelling of 1077847778617 in words is "one trillion, seventy-seven billion, eight hundred forty-seven million, seven hundred seventy-eight thousand, six hundred seventeen".