61320670123 has 8 divisors (see below), whose sum is σ = 64645539840. Its totient is φ = 58079974440.

The previous prime is 61320670121. The next prime is 61320670127. The reversal of 61320670123 is 32107602316.

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 61320670123 - 2¹ = 61320670121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61320670121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21042013 + ... + 21044926.

It is an arithmetic number, because the mean of its divisors is an integer number (8080692480).

Almost surely, 2^61320670123 is an apocalyptic number.

61320670123 is a deficient number, since it is larger than the sum of its proper divisors (3324869717).

61320670123 is a wasteful number, since it uses less digits than its factorization.

61320670123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42087017.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 61320670123 in words is "sixty-one billion, three hundred twenty million, six hundred seventy thousand, one hundred twenty-three".