770811087661 has 8 divisors (see below), whose sum is σ = 776949822464. Its totient is φ = 764673436800.

The previous prime is 770811087601. The next prime is 770811087727. The reversal of 770811087661 is 166780118077.

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

It is a cyclic number.

It is not a de Polignac number, because 770811087661 - 2¹⁷ = 770810956589 is a prime.

It is a super-2 number, since 2×770811087661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 770811087599 and 770811087608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770811087601) 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, 1188061 + ... + 1718461.

It is an arithmetic number, because the mean of its divisors is an integer number (97118727808).

Almost surely, 2^770811087661 is an apocalyptic number.

It is an amenable number.

770811087661 is a deficient number, since it is larger than the sum of its proper divisors (6138734803).

770811087661 is a wasteful number, since it uses less digits than its factorization.

770811087661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541971.

The product of its (nonzero) digits is 790272, while the sum is 52.

The spelling of 770811087661 in words is "seven hundred seventy billion, eight hundred eleven million, eighty-seven thousand, six hundred sixty-one".