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80791288651 = 971093762031
BaseRepresentation
bin100101100111110001…
…0010011101101001011
321201112111001200222001
41023033202103231023
52310430032214101
6101040501411431
75560040423413
oct1131742235513
9251474050861
1080791288651
1131299637a47
12137a8a09b77
137807057858
143ca5cb7643
15217cbc4901
hex12cf893b4b

80791288651 has 8 divisors (see below), whose sum is σ = 81698974784. Its totient is φ = 79885128960.

The previous prime is 80791288621. The next prime is 80791288663. The reversal of 80791288651 is 15688219708.

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 80791288651 - 225 = 80757734219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80791288592 and 80791288601.

It is not an unprimeable number, because it can be changed into a prime (80791288601) 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, 274995 + ... + 487036.

It is an arithmetic number, because the mean of its divisors is an integer number (10212371848).

Almost surely, 280791288651 is an apocalyptic number.

80791288651 is a deficient number, since it is larger than the sum of its proper divisors (907686133).

80791288651 is a wasteful number, since it uses less digits than its factorization.

80791288651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763221.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 80791288651 in words is "eighty billion, seven hundred ninety-one million, two hundred eighty-eight thousand, six hundred fifty-one".

Divisors: 1 97 1093 106021 762031 73917007 832899883 80791288651