54212787990 has 96 divisors (see below), whose sum is σ = 142428948480. Its totient is φ = 14305695552.

The previous prime is 54212787983. The next prime is 54212788013. The reversal of 54212787990 is 9978721245.

54212787990 is a `hidden beast` number, since 542 + 1 + 2 + 7 + 8 + 7 + 9 + 90 = 666.

It is a Curzon number.

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, 10465221 + ... + 10470399.

It is an arithmetic number, because the mean of its divisors is an integer number (1483634880).

Almost surely, 2^54212787990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54212787990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71214474240).

54212787990 is an abundant number, since it is smaller than the sum of its proper divisors (88216160490).

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

54212787990 is a wasteful number, since it uses less digits than its factorization.

54212787990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6386 (or 6383 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 54212787990 in words is "fifty-four billion, two hundred twelve million, seven hundred eighty-seven thousand, nine hundred ninety".