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30151402655 = 5111373399277
BaseRepresentation
bin11100000101001010…
…011110010010011111
32212211022011221202212
4130011022132102133
5443222224341110
621503521111035
72115115460003
oct340512362237
985738157685
1030151402655
11118727540a0
125a1578847b
132ac686557a
1416605ba703
15bb7083e05
hex70529e49f

30151402655 has 16 divisors (see below), whose sum is σ = 39499773984. Its totient is φ = 21912266880.

The previous prime is 30151402609. The next prime is 30151402661. The reversal of 30151402655 is 55620415103.

It is a de Polignac number, because none of the positive numbers 2k-30151402655 is a prime.

It is a congruent number.

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, 124124 + ... + 275153.

It is an arithmetic number, because the mean of its divisors is an integer number (2468735874).

Almost surely, 230151402655 is an apocalyptic number.

30151402655 is a deficient number, since it is larger than the sum of its proper divisors (9348371329).

30151402655 is a wasteful number, since it uses less digits than its factorization.

30151402655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400666.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 30151402655 its reverse (55620415103), we get a palindrome (85771817758).

The spelling of 30151402655 in words is "thirty billion, one hundred fifty-one million, four hundred two thousand, six hundred fifty-five".

Divisors: 1 5 11 55 1373 6865 15103 75515 399277 1996385 4392047 21960235 548207321 2741036605 6030280531 30151402655