61229872896 has 216 divisors, whose sum is σ = 168297204096. Its totient is φ = 19758090240.

The previous prime is 61229872889. The next prime is 61229872933. The reversal of 61229872896 is 69827892216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375643311 + ... + 375643473.

Almost surely, 2^61229872896 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 61229872896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84148602048).

61229872896 is an abundant number, since it is smaller than the sum of its proper divisors (107067331200).

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

61229872896 is an equidigital number, since it uses as much as digits as its factorization.

61229872896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 322 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 60.

The spelling of 61229872896 in words is "sixty-one billion, two hundred twenty-nine million, eight hundred seventy-two thousand, eight hundred ninety-six".