61197502080 has 768 divisors, whose sum is σ = 241218673920. Its totient is φ = 13084262400.

The previous prime is 61197502063. The next prime is 61197502117. The reversal of 61197502080 is 8020579116.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69463240 + ... + 69464120.

It is an arithmetic number, because the mean of its divisors is an integer number (314086815).

Almost surely, 2^61197502080 is an apocalyptic number.

61197502080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61197502080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120609336960).

61197502080 is an abundant number, since it is smaller than the sum of its proper divisors (180021171840).

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

61197502080 is a wasteful number, since it uses less digits than its factorization.

61197502080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 61197502080 in words is "sixty-one billion, one hundred ninety-seven million, five hundred two thousand, eighty".