61123789036 has 24 divisors (see below), whose sum is σ = 107217190080. Its totient is φ = 30490371600.

The previous prime is 61123788997. The next prime is 61123789057. The reversal of 61123789036 is 63098732116.

It is a super-2 number, since 2×61123789036² (a number of 22 digits) contains 22 as substring.

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, 4403475 + ... + 4417333.

It is an arithmetic number, because the mean of its divisors is an integer number (4467382920).

Almost surely, 2^61123789036 is an apocalyptic number.

It is an amenable number.

61123789036 is a deficient number, since it is larger than the sum of its proper divisors (46093401044).

61123789036 is a wasteful number, since it uses less digits than its factorization.

61123789036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16365 (or 16363 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 61123789036 in words is "sixty-one billion, one hundred twenty-three million, seven hundred eighty-nine thousand, thirty-six".