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79942267180 = 2253997113359
BaseRepresentation
bin100101001110011101…
…1100011000100101100
321122100022110221110101
41022130323203010230
52302210210022210
6100420332120444
75530021026226
oct1123473430454
9248308427411
1079942267180
11309a3364606
12135b0606124
13770019ca99
143c2522b416
15212d3b7a3a
hex129cee312c

79942267180 has 12 divisors (see below), whose sum is σ = 167878761120. Its totient is φ = 31976906864.

The previous prime is 79942267157. The next prime is 79942267183. The reversal of 79942267180 is 8176224997.

It is not an unprimeable number, because it can be changed into a prime (79942267183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998556660 + ... + 1998556699.

It is an arithmetic number, because the mean of its divisors is an integer number (13989896760).

Almost surely, 279942267180 is an apocalyptic number.

It is an amenable number.

79942267180 is an abundant number, since it is smaller than the sum of its proper divisors (87936493940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79942267180 is a wasteful number, since it uses less digits than its factorization.

79942267180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997113368 (or 3997113366 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 79942267180 in words is "seventy-nine billion, nine hundred forty-two million, two hundred sixty-seven thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 3997113359 7994226718 15988453436 19985566795 39971133590 79942267180