61552235489 has 8 divisors (see below), whose sum is σ = 61706124480. Its totient is φ = 61398435600.

The previous prime is 61552235377. The next prime is 61552235497. The reversal of 61552235489 is 98453225516.

61552235489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61552235489 - 2²⁰ = 61551186913 is a prime.

It is a super-2 number, since 2×61552235489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61551235489) 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, 1487522 + ... + 1528340.

It is an arithmetic number, because the mean of its divisors is an integer number (7713265560).

Almost surely, 2^61552235489 is an apocalyptic number.

It is an amenable number.

61552235489 is a deficient number, since it is larger than the sum of its proper divisors (153888991).

61552235489 is a wasteful number, since it uses less digits than its factorization.

61552235489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44551.

The product of its digits is 2592000, while the sum is 50.

The spelling of 61552235489 in words is "sixty-one billion, five hundred fifty-two million, two hundred thirty-five thousand, four hundred eighty-nine".