61367578480 has 160 divisors (see below), whose sum is σ = 156106883520. Its totient is φ = 22298664960.

The previous prime is 61367578471. The next prime is 61367578541. The reversal of 61367578480 is 8487576316.

It is a super-2 number, since 2×61367578480² (a number of 22 digits) contains 22 as substring.

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, 65214810 + ... + 65215750.

It is an arithmetic number, because the mean of its divisors is an integer number (975668022).

Almost surely, 2^61367578480 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 61367578480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78053441760).

61367578480 is an abundant number, since it is smaller than the sum of its proper divisors (94739305040).

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

61367578480 is a wasteful number, since it uses less digits than its factorization.

61367578480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1893 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 61367578480 in words is "sixty-one billion, three hundred sixty-seven million, five hundred seventy-eight thousand, four hundred eighty".