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80982936947 = 1133301221077
BaseRepresentation
bin100101101101011110…
…1011000110101110011
321202000211200110000002
41023122331120311303
52311323112440242
6101111505220215
75564555414663
oct1133275306563
9252024613002
1080982936947
1131387836170
121384103166b
137837979603
143cc35241a3
15218e92e432
hex12daf58d73

80982936947 has 8 divisors (see below), whose sum is σ = 88348074672. Its totient is φ = 73618308000.

The previous prime is 80982936901. The next prime is 80982936989. The reversal of 80982936947 is 74963928908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80982936947 - 26 = 80982936883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80982936547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255773 + ... + 476849.

It is an arithmetic number, because the mean of its divisors is an integer number (11043509334).

Almost surely, 280982936947 is an apocalyptic number.

80982936947 is a deficient number, since it is larger than the sum of its proper divisors (7365137725).

80982936947 is a wasteful number, since it uses less digits than its factorization.

80982936947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254389.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 80982936947 in words is "eighty billion, nine hundred eighty-two million, nine hundred thirty-six thousand, nine hundred forty-seven".

Divisors: 1 11 33301 221077 366311 2431847 7362085177 80982936947