20207754457380 has 576 divisors, whose sum is σ = 74144109312000. Its totient is φ = 4357737086976.

The previous prime is 20207754457367. The next prime is 20207754457381. The reversal of 20207754457380 is 8375445770202.

It is a happy number.

20207754457380 is a `hidden beast` number, since 2 + 0 + 20 + 7 + 7 + 5 + 44 + 573 + 8 + 0 = 666.

It is a super-2 number, since 2×20207754457380² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20207754457381) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 279969936 + ... + 280042104.

It is an arithmetic number, because the mean of its divisors is an integer number (128722412000).

Almost surely, 2^{20207754457380} is an apocalyptic number.

20207754457380 is a gapful number since it is divisible by the number (20) 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 20207754457380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37072054656000).

20207754457380 is an abundant number, since it is smaller than the sum of its proper divisors (53936354854620).

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

20207754457380 is a wasteful number, since it uses less digits than its factorization.

20207754457380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72396 (or 72391 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 54.

The spelling of 20207754457380 in words is "twenty trillion, two hundred seven billion, seven hundred fifty-four million, four hundred fifty-seven thousand, three hundred eighty".