56666754120742 has 16 divisors (see below), whose sum is σ = 86604167625840. Its totient is φ = 27798701460192.

The previous prime is 56666754120731. The next prime is 56666754120761. The reversal of 56666754120742 is 24702145766665.

It is a super-2 number, since 2×56666754120742² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49260184 + ... + 50397412.

It is an arithmetic number, because the mean of its divisors is an integer number (5412760476615).

Almost surely, 2^{56666754120742} is an apocalyptic number.

56666754120742 is a deficient number, since it is larger than the sum of its proper divisors (29937413505098).

56666754120742 is a wasteful number, since it uses less digits than its factorization.

56666754120742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607367.

The product of its (nonzero) digits is 101606400, while the sum is 61.

The spelling of 56666754120742 in words is "fifty-six trillion, six hundred sixty-six billion, seven hundred fifty-four million, one hundred twenty thousand, seven hundred forty-two".