61210842143766 has 64 divisors (see below), whose sum is σ = 140853586027008. Its totient is φ = 17371008016128.

The previous prime is 61210842143749. The next prime is 61210842143809. The reversal of 61210842143766 is 66734124801216.

It is a super-2 number, since 2×61210842143766² (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 31 ways as a sum of consecutive naturals, for example, 16178721 + ... + 19600323.

It is an arithmetic number, because the mean of its divisors is an integer number (2200837281672).

Almost surely, 2^{61210842143766} is an apocalyptic number.

61210842143766 is an abundant number, since it is smaller than the sum of its proper divisors (79642743883242).

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

61210842143766 is a wasteful number, since it uses less digits than its factorization.

61210842143766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424485.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 61210842143766 in words is "sixty-one trillion, two hundred ten billion, eight hundred forty-two million, one hundred forty-three thousand, seven hundred sixty-six".