55978696704 has 224 divisors, whose sum is σ = 180635550336. Its totient is φ = 15052308480.

The previous prime is 55978696649. The next prime is 55978696729. The reversal of 55978696704 is 40769687955.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×55978696704² (a number of 22 digits) contains 22 as substring.

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, 2914974 + ... + 2934114.

Almost surely, 2^55978696704 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 55978696704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90317775168).

55978696704 is an abundant number, since it is smaller than the sum of its proper divisors (124656853632).

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

55978696704 is a wasteful number, since it uses less digits than its factorization.

55978696704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19194 (or 19170 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 66.

The spelling of 55978696704 in words is "fifty-five billion, nine hundred seventy-eight million, six hundred ninety-six thousand, seven hundred four".