61030816896 has 128 divisors (see below), whose sum is σ = 185644569600. Its totient is φ = 17402323968.

The previous prime is 61030816879. The next prime is 61030816933. The reversal of 61030816896 is 69861803016.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×61030816896² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329495 + ... + 1374633.

It is an arithmetic number, because the mean of its divisors is an integer number (1450348200).

Almost surely, 2^61030816896 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 61030816896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92822284800).

61030816896 is an abundant number, since it is smaller than the sum of its proper divisors (124613752704).

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

61030816896 is a wasteful number, since it uses less digits than its factorization.

61030816896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45666 (or 45654 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 61030816896 in words is "sixty-one billion, thirty million, eight hundred sixteen thousand, eight hundred ninety-six".