61722120500002 has 16 divisors (see below), whose sum is σ = 92985561243072. Its totient is φ = 30727179750960.

The previous prime is 61722120499981. The next prime is 61722120500017. The reversal of 61722120500002 is 20000502122716.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61081318 + ... + 62083585.

It is an arithmetic number, because the mean of its divisors is an integer number (5811597577692).

Almost surely, 2^{61722120500002} is an apocalyptic number.

61722120500002 is a deficient number, since it is larger than the sum of its proper divisors (31263440743070).

61722120500002 is a wasteful number, since it uses less digits than its factorization.

61722120500002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123165993.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 61722120500002 its reverse (20000502122716), we get a palindrome (81722622622718).

The spelling of 61722120500002 in words is "sixty-one trillion, seven hundred twenty-two billion, one hundred twenty million, five hundred thousand, two".