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20258370054 = 23513231091279
BaseRepresentation
bin10010110111011111…
…100011001000000110
31221021211200211100000
4102313133203020012
5312442120320204
613150115102130
71315010206236
oct226737431006
957254624300
1020258370054
11865635a29a
123b145a1946
131bab08b020
14da273dcc6
157d87a5039
hex4b77e3206

20258370054 has 192 divisors, whose sum is σ = 51661209600. Its totient is φ = 5903010432.

The previous prime is 20258370023. The next prime is 20258370103. The reversal of 20258370054 is 45007385202.

20258370054 is a `hidden beast` number, since 2 + 0 + 2 + 583 + 70 + 0 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15838587 + ... + 15839865.

It is an arithmetic number, because the mean of its divisors is an integer number (269068800).

Almost surely, 220258370054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20258370054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25830604800).

20258370054 is an abundant number, since it is smaller than the sum of its proper divisors (31402839546).

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

20258370054 is a wasteful number, since it uses less digits than its factorization.

20258370054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 20258370054 in words is "twenty billion, two hundred fifty-eight million, three hundred seventy thousand, fifty-four".