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20749546675 = 5211135804069
BaseRepresentation
bin10011010100110001…
…001111010010110011
31222120001221011222201
4103110301033102303
5314443340443200
613310542444031
71333123144114
oct232461172263
958501834881
1020749546675
11888863a590
124030b93617
131c58a73c90
14100ba7a20b
15816978c6a
hex4d4c4f4b3

20749546675 has 24 divisors (see below), whose sum is σ = 30227596560. Its totient is φ = 13929763200.

The previous prime is 20749546637. The next prime is 20749546759. The reversal of 20749546675 is 57664594702.

It is not a de Polignac number, because 20749546675 - 215 = 20749513907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2898460 + ... + 2905609.

It is an arithmetic number, because the mean of its divisors is an integer number (1259483190).

Almost surely, 220749546675 is an apocalyptic number.

20749546675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20749546675 is a deficient number, since it is larger than the sum of its proper divisors (9478049885).

20749546675 is a wasteful number, since it uses less digits than its factorization.

20749546675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804103 (or 5804098 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 20749546675 in words is "twenty billion, seven hundred forty-nine million, five hundred forty-six thousand, six hundred seventy-five".

Divisors: 1 5 11 13 25 55 65 143 275 325 715 3575 5804069 29020345 63844759 75452897 145101725 319223795 377264485 829981867 1596118975 1886322425 4149909335 20749546675