61676545392 has 720 divisors, whose sum is σ = 239265936000. Its totient is φ = 15166932480.

The previous prime is 61676545391. The next prime is 61676545417. The reversal of 61676545392 is 29354567616.

61676545392 is a `hidden beast` number, since 6 + 1 + 6 + 7 + 6 + 545 + 3 + 92 = 666.

61676545392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61676545391) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 39816234 + ... + 39817782.

It is an arithmetic number, because the mean of its divisors is an integer number (332313800).

Almost surely, 2^61676545392 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 61676545392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119632968000).

61676545392 is an abundant number, since it is smaller than the sum of its proper divisors (177589390608).

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

61676545392 is a wasteful number, since it uses less digits than its factorization.

61676545392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1591 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The spelling of 61676545392 in words is "sixty-one billion, six hundred seventy-six million, five hundred forty-five thousand, three hundred ninety-two".