61242405480 has 384 divisors, whose sum is σ = 219299633280. Its totient is φ = 15318097920.

The previous prime is 61242405467. The next prime is 61242405529. The reversal of 61242405480 is 8450424216.

61242405480 is a `hidden beast` number, since 6 + 1 + 242 + 405 + 4 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 75514275 + ... + 75515085.

It is an arithmetic number, because the mean of its divisors is an integer number (571092795).

Almost surely, 2^61242405480 is an apocalyptic number.

61242405480 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 61242405480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109649816640).

61242405480 is an abundant number, since it is smaller than the sum of its proper divisors (158057227800).

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

61242405480 is a wasteful number, since it uses less digits than its factorization.

61242405480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

Adding to 61242405480 its reverse (8450424216), we get a palindrome (69692829696).

The spelling of 61242405480 in words is "sixty-one billion, two hundred forty-two million, four hundred five thousand, four hundred eighty".