61030881868 has 12 divisors (see below), whose sum is σ = 116513501832. Its totient is φ = 27741309920.

The previous prime is 61030881851. The next prime is 61030881871. The reversal of 61030881868 is 86818803016.

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 3 ways as a sum of consecutive naturals, for example, 693532705 + ... + 693532792.

It is an arithmetic number, because the mean of its divisors is an integer number (9709458486).

Almost surely, 2^61030881868 is an apocalyptic number.

It is an amenable number.

61030881868 is a deficient number, since it is larger than the sum of its proper divisors (55482619964).

61030881868 is a wasteful number, since it uses less digits than its factorization.

61030881868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387065512 (or 1387065510 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The spelling of 61030881868 in words is "sixty-one billion, thirty million, eight hundred eighty-one thousand, eight hundred sixty-eight".