61222503723 has 4 divisors (see below), whose sum is σ = 81630004968. Its totient is φ = 40815002480.

The previous prime is 61222503697. The next prime is 61222503739. The reversal of 61222503723 is 32730522216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61222503723 - 2⁵ = 61222503691 is a prime.

It is a super-2 number, since 2×61222503723² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61222503743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10203750618 + ... + 10203750623.

It is an arithmetic number, because the mean of its divisors is an integer number (20407501242).

Almost surely, 2^61222503723 is an apocalyptic number.

61222503723 is a deficient number, since it is larger than the sum of its proper divisors (20407501245).

61222503723 is a wasteful number, since it uses less digits than its factorization.

61222503723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20407501244.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 61222503723 in words is "sixty-one billion, two hundred twenty-two million, five hundred three thousand, seven hundred twenty-three".