53777629944 has 192 divisors, whose sum is σ = 158118048000. Its totient is φ = 16932939840.

The previous prime is 53777629901. The next prime is 53777629981. The reversal of 53777629944 is 44992677735.

53777629944 is a `hidden beast` number, since 537 + 7 + 7 + 6 + 2 + 9 + 94 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34230679 + ... + 34232249.

It is an arithmetic number, because the mean of its divisors is an integer number (823531500).

Almost surely, 2^53777629944 is an apocalyptic number.

53777629944 is a gapful number since it is divisible by the number (54) 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 53777629944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79059024000).

53777629944 is an abundant number, since it is smaller than the sum of its proper divisors (104340418056).

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

53777629944 is a wasteful number, since it uses less digits than its factorization.

53777629944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063 (or 2034 counting only the distinct ones).

The product of its digits is 80015040, while the sum is 63.

The spelling of 53777629944 in words is "fifty-three billion, seven hundred seventy-seven million, six hundred twenty-nine thousand, nine hundred forty-four".