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102142372677 = 31271571707581
BaseRepresentation
bin101111100100000101…
…0001110101101000101
3100202122110220011001220
41133020022032231011
53133141421411202
6114531253310553
710244116561662
oct1371012165505
9322573804056
10102142372677
113a355785434
1217967335459
13982a615097
144d2d7baa69
1529cc371abc
hex17c828eb45

102142372677 has 16 divisors (see below), whose sum is σ = 138136553472. Its totient is φ = 67128384960.

The previous prime is 102142372643. The next prime is 102142372691. The reversal of 102142372677 is 776273241201.

It is not a de Polignac number, because 102142372677 - 26 = 102142372613 is a prime.

It is a super-2 number, since 2×1021423726772 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102142372697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793974 + ... + 913607.

It is an arithmetic number, because the mean of its divisors is an integer number (8633534592).

Almost surely, 2102142372677 is an apocalyptic number.

It is an amenable number.

102142372677 is a deficient number, since it is larger than the sum of its proper divisors (35994180795).

102142372677 is a wasteful number, since it uses less digits than its factorization.

102142372677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707868.

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 102142372677 in words is "one hundred two billion, one hundred forty-two million, three hundred seventy-two thousand, six hundred seventy-seven".

Divisors: 1 3 127 157 381 471 19939 59817 1707581 5122743 216862787 268090217 650588361 804270651 34047457559 102142372677