8621340701778 has 24 divisors (see below), whose sum is σ = 21348081738048. Its totient is φ = 2463240200472.

The previous prime is 8621340701737. The next prime is 8621340701819. The reversal of 8621340701778 is 8771070431268.

8621340701778 is a `hidden beast` number, since 8 + 6 + 213 + 407 + 0 + 17 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (8621340701737) and next prime (8621340701819).

It is a super-2 number, since 2×8621340701778² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34211669326 + ... + 34211669577.

It is an arithmetic number, because the mean of its divisors is an integer number (889503405752).

Almost surely, 2^{8621340701778} is an apocalyptic number.

8621340701778 is an abundant number, since it is smaller than the sum of its proper divisors (12726741036270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8621340701778 is a wasteful number, since it uses less digits than its factorization.

8621340701778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68423338918 (or 68423338915 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 8621340701778 in words is "eight trillion, six hundred twenty-one billion, three hundred forty million, seven hundred one thousand, seven hundred seventy-eight".