61371452928 has 160 divisors (see below), whose sum is σ = 169081178112. Its totient is φ = 19760947200.

The previous prime is 61371452917. The next prime is 61371452953. The reversal of 61371452928 is 82925417316.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40615693 + ... + 40617203.

Almost surely, 2^61371452928 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 61371452928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84540589056).

61371452928 is an abundant number, since it is smaller than the sum of its proper divisors (107709725184).

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

61371452928 is a wasteful number, since it uses less digits than its factorization.

61371452928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 2400 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The spelling of 61371452928 in words is "sixty-one billion, three hundred seventy-one million, four hundred fifty-two thousand, nine hundred twenty-eight".