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40120813858 = 21719331187633
BaseRepresentation
bin100101010111011000…
…110000100100100010
310211120002101111221211
4211113120300210202
51124131412020413
630233052140334
72620142201536
oct452730604442
9124502344854
1040120813858
1116019176304
1279384676aa
133a25102a58
141d28659bc6
15109c3ed83d
hex957630922

40120813858 has 32 divisors (see below), whose sum is σ = 67278047040. Its totient is φ = 17832545280.

The previous prime is 40120813823. The next prime is 40120813861. The reversal of 40120813858 is 85831802104.

It is a self number, because there is not a number n which added to its sum of digits gives 40120813858.

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, 120010 + ... + 307642.

It is an arithmetic number, because the mean of its divisors is an integer number (2102438970).

Almost surely, 240120813858 is an apocalyptic number.

40120813858 is a deficient number, since it is larger than the sum of its proper divisors (27157233182).

40120813858 is a wasteful number, since it uses less digits than its factorization.

40120813858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188002.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 40120813858 in words is "forty billion, one hundred twenty million, eight hundred thirteen thousand, eight hundred fifty-eight".

Divisors: 1 2 17 19 34 38 323 331 646 662 5627 6289 11254 12578 106913 187633 213826 375266 3189761 3565027 6379522 7130054 60605459 62106523 121210918 124213046 1055810891 1180023937 2111621782 2360047874 20060406929 40120813858