61536453144 has 128 divisors (see below), whose sum is σ = 157264800000. Its totient is φ = 20062453248.

The previous prime is 61536453079. The next prime is 61536453161. The reversal of 61536453144 is 44135463516.

It is a happy number.

61536453144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61536453096 and 61536453105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83269527 + ... + 83270265.

It is an arithmetic number, because the mean of its divisors is an integer number (1228631250).

Almost surely, 2^61536453144 is an apocalyptic number.

It is an amenable number.

61536453144 is an abundant number, since it is smaller than the sum of its proper divisors (95728346856).

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

61536453144 is a wasteful number, since it uses less digits than its factorization.

61536453144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1221 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The spelling of 61536453144 in words is "sixty-one billion, five hundred thirty-six million, four hundred fifty-three thousand, one hundred forty-four".