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79480638507 = 361434320429
BaseRepresentation
bin100101000000101101…
…0100100110000101011
321121011010211202222010
41022001122210300223
52300234020413012
6100302441531003
75512414165104
oct1120132446053
9247133752863
1079480638507
1130786826106
12134a1aa3a63
13765866111a
143bbdbc33ab
152102acdc3c
hex12816a4c2b

79480638507 has 8 divisors (see below), whose sum is σ = 107711466640. Its totient is φ = 52118451360.

The previous prime is 79480638499. The next prime is 79480638527. The reversal of 79480638507 is 70583608497.

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

It is not a de Polignac number, because 79480638507 - 23 = 79480638499 is a prime.

It is a super-2 number, since 2×794806385072 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79480638527) 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, 217160032 + ... + 217160397.

It is an arithmetic number, because the mean of its divisors is an integer number (13463933330).

Almost surely, 279480638507 is an apocalyptic number.

79480638507 is a deficient number, since it is larger than the sum of its proper divisors (28230828133).

79480638507 is a wasteful number, since it uses less digits than its factorization.

79480638507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434320493.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 79480638507 in words is "seventy-nine billion, four hundred eighty million, six hundred thirty-eight thousand, five hundred seven".

Divisors: 1 3 61 183 434320429 1302961287 26493546169 79480638507