3720616891878 has 64 divisors (see below), whose sum is σ = 7970205616128. Its totient is φ = 1155722204160.

The previous prime is 3720616891811. The next prime is 3720616891913. The reversal of 3720616891878 is 8781986160273.

It is a super-2 number, since 2×3720616891878² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2119200 + ... + 3454307.

It is an arithmetic number, because the mean of its divisors is an integer number (124534462752).

Almost surely, 2^{3720616891878} is an apocalyptic number.

3720616891878 is an abundant number, since it is smaller than the sum of its proper divisors (4249588724250).

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

3720616891878 is a wasteful number, since it uses less digits than its factorization.

3720616891878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573677.

The product of its (nonzero) digits is 48771072, while the sum is 66.

The spelling of 3720616891878 in words is "three trillion, seven hundred twenty billion, six hundred sixteen million, eight hundred ninety-one thousand, eight hundred seventy-eight".