61268881843 has 16 divisors (see below), whose sum is σ = 66169656000. Its totient is φ = 56395100160.

The previous prime is 61268881819. The next prime is 61268881847. The reversal of 61268881843 is 34818886216.

It is a cyclic number.

It is not a de Polignac number, because 61268881843 - 2²⁹ = 60732010931 is a prime.

It is a super-3 number, since 3×61268881843³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61268881847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18729298 + ... + 18732568.

It is an arithmetic number, because the mean of its divisors is an integer number (4135603500).

Almost surely, 2^61268881843 is an apocalyptic number.

61268881843 is a deficient number, since it is larger than the sum of its proper divisors (4900774157).

61268881843 is a wasteful number, since it uses less digits than its factorization.

61268881843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6942.

The product of its digits is 3538944, while the sum is 55.

The spelling of 61268881843 in words is "sixty-one billion, two hundred sixty-eight million, eight hundred eighty-one thousand, eight hundred forty-three".