7677027981 has 24 divisors (see below), whose sum is σ = 12686341824. Its totient is φ = 4382320320.

The previous prime is 7677027931. The next prime is 7677027997. The reversal of 7677027981 is 1897207767.

It is not a de Polignac number, because 7677027981 - 2¹¹ = 7677025933 is a prime.

It is a super-2 number, since 2×7677027981² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7677027901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1576 + ... + 123921.

It is an arithmetic number, because the mean of its divisors is an integer number (528597576).

Almost surely, 2^7677027981 is an apocalyptic number.

It is an amenable number.

7677027981 is a deficient number, since it is larger than the sum of its proper divisors (5009313843).

7677027981 is a wasteful number, since it uses less digits than its factorization.

7677027981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126481 (or 126478 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 54.

The square root of 7677027981 is about 87618.6508741147. The cubic root of 7677027981 is about 1972.7151256163.

The spelling of 7677027981 in words is "seven billion, six hundred seventy-seven million, twenty-seven thousand, nine hundred eighty-one".