61572222123 has 8 divisors (see below), whose sum is σ = 86925490128. Its totient is φ = 38633551104.

The previous prime is 61572222121. The next prime is 61572222133. The reversal of 61572222123 is 32122227516.

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

It is not a de Polignac number, because 61572222123 - 2¹ = 61572222121 is a prime.

It is a super-2 number, since 2×61572222123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61572222121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603649186 + ... + 603649287.

It is an arithmetic number, because the mean of its divisors is an integer number (10865686266).

Almost surely, 2^61572222123 is an apocalyptic number.

61572222123 is a deficient number, since it is larger than the sum of its proper divisors (25353268005).

61572222123 is a wasteful number, since it uses less digits than its factorization.

61572222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207298493.

The product of its digits is 20160, while the sum is 33.

Adding to 61572222123 its reverse (32122227516), we get a palindrome (93694449639).

The spelling of 61572222123 in words is "sixty-one billion, five hundred seventy-two million, two hundred twenty-two thousand, one hundred twenty-three".