61722708552 has 324 divisors, whose sum is σ = 187224960195. Its totient is φ = 18365662656.

The previous prime is 61722708521. The next prime is 61722708583. The reversal of 61722708552 is 25580722716.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

61722708552 is a `hidden beast` number, since 6 + 1 + 7 + 22 + 70 + 8 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (61722708521) and next prime (61722708583).

It can be written as a sum of positive squares in only one way, i.e., 30861354276 + 30861354276 = 175674^2 + 175674^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175674.

It is a junction number, because it is equal to n+sod(n) for n = 61722708498 and 61722708507.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 921234423 + ... + 921234489.

Almost surely, 2^61722708552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61722708552

61722708552 is an abundant number, since it is smaller than the sum of its proper divisors (125502251643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61722708552 is a wasteful number, since it uses less digits than its factorization.

61722708552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 61722708552 in words is "sixty-one billion, seven hundred twenty-two million, seven hundred eight thousand, five hundred fifty-two".