61389710237 has 4 divisors (see below), whose sum is σ = 61418793216. Its totient is φ = 61360627260.

The previous prime is 61389710227. The next prime is 61389710243. The reversal of 61389710237 is 73201798316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61389710237 - 2²⁴ = 61372933021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61389710191 and 61389710200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61389710227) by changing a digit.

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, 14538323 + ... + 14542544.

It is an arithmetic number, because the mean of its divisors is an integer number (15354698304).

Almost surely, 2^61389710237 is an apocalyptic number.

It is an amenable number.

61389710237 is a deficient number, since it is larger than the sum of its proper divisors (29082979).

61389710237 is a wasteful number, since it uses less digits than its factorization.

61389710237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29082978.

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

The spelling of 61389710237 in words is "sixty-one billion, three hundred eighty-nine million, seven hundred ten thousand, two hundred thirty-seven".