61123789037 has 8 divisors (see below), whose sum is σ = 61217536440. Its totient is φ = 61030091520.

The previous prime is 61123788997. The next prime is 61123789057. The reversal of 61123789037 is 73098732116.

It can be written as a sum of positive squares in 4 ways, for example, as 9734979556 + 51388809481 = 98666^2 + 226691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61123789037 - 2²² = 61119594733 is a prime.

It is a super-2 number, since 2×61123789037² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61123788982 and 61123789000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61123789057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2968337 + ... + 2988857.

It is an arithmetic number, because the mean of its divisors is an integer number (7652192055).

Almost surely, 2^61123789037 is an apocalyptic number.

It is an amenable number.

61123789037 is a deficient number, since it is larger than the sum of its proper divisors (93747403).

61123789037 is a wasteful number, since it uses less digits than its factorization.

61123789037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24943.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 61123789037 in words is "sixty-one billion, one hundred twenty-three million, seven hundred eighty-nine thousand, thirty-seven".