6701561155872 has 240 divisors, whose sum is σ = 21503818030464. Its totient is φ = 2030495040000.

The previous prime is 6701561155853. The next prime is 6701561155897. The reversal of 6701561155872 is 2785511651076.

6701561155872 is a `hidden beast` number, since 6 + 7 + 0 + 1 + 5 + 6 + 11 + 558 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 308802622 + ... + 308824322.

Almost surely, 2^{6701561155872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6701561155872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10751909015232).

6701561155872 is an abundant number, since it is smaller than the sum of its proper divisors (14802256874592).

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

6701561155872 is a wasteful number, since it uses less digits than its factorization.

6701561155872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32565 (or 32548 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 54.

The spelling of 6701561155872 in words is "six trillion, seven hundred one billion, five hundred sixty-one million, one hundred fifty-five thousand, eight hundred seventy-two".