61440588396 has 96 divisors (see below), whose sum is σ = 173819976960. Its totient is φ = 18613152000.

The previous prime is 61440588371. The next prime is 61440588397. The reversal of 61440588396 is 69388504416.

61440588396 is a `hidden beast` number, since 6 + 14 + 40 + 588 + 3 + 9 + 6 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (61440588397) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7659780 + ... + 7667796.

It is an arithmetic number, because the mean of its divisors is an integer number (1810624760).

Almost surely, 2^61440588396 is an apocalyptic number.

61440588396 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61440588396 is an abundant number, since it is smaller than the sum of its proper divisors (112379388564).

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

61440588396 is a wasteful number, since it uses less digits than its factorization.

61440588396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14492 (or 14484 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 61440588396 in words is "sixty-one billion, four hundred forty million, five hundred eighty-eight thousand, three hundred ninety-six".