61369977024 has 224 divisors, whose sum is σ = 188550743040. Its totient is φ = 19554683904.

The previous prime is 61369977023. The next prime is 61369977043. The reversal of 61369977024 is 42077996316.

It is a happy number.

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

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (61369977023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3483502 + ... + 3501074.

Almost surely, 2^61369977024 is an apocalyptic number.

61369977024 is a gapful number since it is divisible by the number (64) 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 61369977024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94275371520).

61369977024 is an abundant number, since it is smaller than the sum of its proper divisors (127180766016).

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

61369977024 is a wasteful number, since it uses less digits than its factorization.

61369977024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17684 (or 17668 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 61369977024 in words is "sixty-one billion, three hundred sixty-nine million, nine hundred seventy-seven thousand, twenty-four".